I'd be wary of any of the car auto-eleccies. 99% of them are shit, the other 1% are making too much money on other stuff... Add in the complication of something outside their usual box...
1. Glen Kellie from ESP is very good. Dunno if he'd be interested (he's definitely in the 1%).
2. Rob Sharp was good, but I think he's working full time for CIT nowdays.
3. Bruce at Bruce's motorcycles is the only ACT-based bike mechanic who deserves the title, IMHO.
4. Marty at Wright MC in Yass is probably the best bet, and is also a PE owner.