McCully paid a considerable amount to honour a deal after Kylie Ree won her previous start, the Sires' Stakes Championship, at Addington.
McCully had agreed to pay Maree Price the valuation for a half share if the filly qualified for the Harness Jewels.
"I decided to pay up before the Jewels as I felt she [Kylie Ree] was a big chance," McCully said.
"The price of a half share would be valued at a lot more if she won."
The semi-retired farmer bought Kylie Ree from Price 10 months ago with the bonus proviso.
The filly collected $50,000 for her win on Saturday.
Kylie Ree was soon in front and held on by three-quarters of a length.
The favourite, Paramount Geegee, did well for fifth after leaving stride at the start.
Mark Purdon and Grant Payne, the trainers of Kylie Ree, also won Harness Jewels races on Saturday with the 2yr-old pacer Major Mark and I Can Doosit (4yo trotter) on the premier day offering $1.5 million stakes.
The stable collected $357,000 from three wins and six minor placings from their 17 candidates.
Unplaced horses received $5000.
I Can Doosit is raced by Ken and Karen Breckon, of Auckland, who bred the mare.
Purdon and Payne consolidated their position at the top of the HJ table with eight HJ wins in the four runnings of the series.
Purdon has trained two winners in a sole capacity.
Purdon and David Butcher are the most successful drivers with six wins.
Butcher won with De Lovely and Tintin In America on Saturday.
Both horses are trained by Geoff Small.
Phil Creighton, the East Taieri part-owner of Major Mark, celebrated his birthday on Saturday with the win.
Major Mark displayed courage to lead and hold on by half a head from The Muskeg Express.
Creighton shares the ownership of Major Mark with Phil and Glenys Kennard, of Christchurch, Gavin Douglas, of Ashburton and Neil Pilcher, of Christchurch.
They bought Major Mark for $60,000 at the premier yearling sale.
The colt has amassed $380,948 from seven wins and three placings in 10 starts.
"Our syndicate had bought a couple and both of them died before Major Mark came along," Creighton said.
Glenys and Phil Kennard were experiencing their third win in a HJ race.
They have also won with Fiery Falcon and Highview Tommy (twice).
"The emotion and thrill, there is nothing like it," Glenys Kennard said.
The owners of Beaudiene Bad Babe were together for the first time for one of her 21 wins when she triumphed in the $200,000 section for 4yr-old mares.
Liz Doherty, of Invercargill, her sister, Kathryn Ryan, of Waipara, brother Quentin Ryan, of Sydney, were joined by Kathryn's children, Jessica and Tom Hishon.
They comprise the estate of Peter Ryan, who race Beaudiene Bad Babe from the Invercargill stable of Murray Brown.
Ryan bought Beaudiene Bad Babe at the yearling sale.
He died six days after she won her first race at Gore in December 2007.
The win was the first group one for Brown (59), who has been training for 28 years.
Beaudiene Bad Babe has amassed $3458,226 in stakes.
"She will go to the paddock now and we will target the Interdominion with her next season," Brown said.
Jenny Butt and her sons, Tim and Anthony, combined to win the $100,000 section for 3yr-old trotters with Vulcan.
Vulcan, trained by Tim and driven by Anthony, led and prevailed after being challenged strongly over the final 600m by Kahdon.
Vulcan is raced by Jenny with Don McKenzie, of Rangiora.
They bred Vulcan from Epona, who was too wayward to be broken in.
Epona (Sundon-Abundant) is a sister to Genius, winner of 24 races.
Kahdon was on a flight to Melbourne yesterday morning for a start in the Victoria Trotting Oaks on Friday night.
She is now trained by Mark Jones.
Bettor Cover Lover cemented her position as the top 2yr-old filly with her win.
Trained by Brent Mangos and owned by Trevor and Colleen Lindsay, of Perth, Bettor Cover Lover, has won five of her six starts and finished second in the other.
A $12,000 yearling sale purchase, she has earned $322,322 in stakes.
Trainer Geoff Small will discuss an Australian campaign with the owners of De Lovely, who recorded a New Zealand record time for a 3yr-old filly of 1.54.
De Lovely is raced by the Les Girls No 2 syndicate.
"I will have to sit down with the owners and discuss her programme.
She is in the Breeders' Crown and Oaks races in Australia," Small said.
De Lovely was given no respite in the lead but won by a length and three-quarters.
Her time was 0.4sec inside the record set by Joyfuljoy at Ashburton last year.
Sir Lincoln won the 3yr-old colts and geldings section in 1.54.6.
His Auckland owners, John Street and Graeme Blackburn, had earlier won a race at Wanganui on Saturday with Cordova Bay.
Course betting declined by $132,601 at the Harness Jewels meeting at Cambridge on Saturday compared with the first HJ meeting there two years ago.
The turnover was $387,399.
Off-course betting was $1,531,507, down $3493 on 2008.
