Trainer Michael Nolan has resisted the temptation of a gear change to curb the wayward racing manners of Prussian Heart.

The two-year-old raced ungenerously when he won in heavy going at Eagle Farm on July 10 defeating Neuschwanstein who confirmed the strength of the form by winning at the same track on Wednesday.

"I don't want to blinker him yet because I don't want to rev him up," Nolan said.

"I'd rather get him to settle and I'm just hoping from his good draw he can get onto the fence and on a better surface he mightn't do as much wrong."

Nolan says Prussian Heart is a pleasure to work with and is mystified by his racing antics.

"He's a good horse to deal with around the stable. I don't know why he's got that bit of rubbish in him that he wants to get off the track," he said.

"I think he just needs racing and experience."

Nolan says it's a positive sign that jockey Chris Munce has stuck with the son of Show A Heart in Saturday's Canadian Club Handicap (1200m) at Doomben.

"I know he's got to step up to Saturday grade and it's always an ask off a midweek run but he's just the type of horse, that I think could do it and the fact Chris has stuck with him gives me a lot of confidence," he said.

"We've got to wait and see about the 1200 metres when they've only been 1000 metres but he gives me every indication he'll run it."

The physical development Prussian Heart has made since his first campaign has impressed Nolan.

"He went out a little runty thing but he's come back a really lovely looking horse," he said.

Prussian Heart is part-owned by former bookmaker Fred Lanskey who bred the colt.

Lanskey also raced Prussian Heart's dam Tender Truce who won her first three starts as a two-year-old when trained by Alan Bailey.