Just ask Jack Trainor.

He brought former Western Australia-based mare Dibaba across to New South Wales in order to take advantage of a quirk in Harness Racing Australia's rating system, which has given his horse the chance to race among easier company.

And so far it's paying off.

Dibaba made it two wins from two starts following her eastern move, taking out Sunday's Lady Drivers Ladyship Pace (1,730 metres) at Bathurst Paceway as an overwhelming favourite.

Amanda Turnbull took seven-year-old Dibaba ($1.20) to the front early in the event and started to ask questions of her rivals during a 27.9 third quarter.

That was enough to shake off most hopefuls, except for the Bernie Hewitt-trained Iamajoyride ($5, Gemma Hewitt) who had tailed the leader throughout the running.

But with one last nudge from Turnbull Dibaba accounted for her challenger more comfortably than the 4.2m margin would suggest.

Trainor said the decision to bring Dibaba across was a pretty easy one to make when the current rating system presented such a tantalising opportunity.

"It's a little bit of glitch in the system at the moment between Western Australia harness racing and New South Wales," Trainor said.

"Their rating system doesn't seem to match up with ours. A horse like her, who has had over 100 starts for five wins, has come back to the rating in New South Wales which is normally given for a two-year-old beginning their prep as a maiden.

"We're just making the most of that glitch in the system, and it's starting to get found out a little bit now as more people are starting to do it.

"We've found a mare with a bit of ability who is appreciating the class drop at the moment. From what she's been racing in Perth - against five to 10-win horses - coming back racing in this is a breeze for her.

"As a mare she can claim so she's still got more wins in store."