no - The Brake Balance is the only thing you're allowed to adjust - if tuning is allowed in a time trial the parts you can use are listed in the thread.
Thanks to Sutuki's replay, I finally managed to get a decent T1 (maybe just a fluke!), but there's still a lot of work to be done on the rest of the lap...
first decent splits after i finished the online race tonight .
Seems to help to drive 28 laps in racemode , and then straight to the timetrial .
well , for me at least
Submitted and accepted. If my Internet connection doesn't get turned off at midnight (which is unfortunately likely) I'll try to get the last couple of* tenths tomorrow, but I'm happy enough with my lap.