So I have an '86 Miyata 12 speed that I plan on using in 2012 for a few triathlons/duathlons. Since I will be new to these races, I'm hoping to get some feedback from others who race on older bikes. Will not having a real small crankset (smallest is 42) be an issue? Is there anyone who has had issues using DT/friction shifters in a race? Any other pieces of adivce for a newbie? Thanks!