Journeyman
"And this one is just right" ~ Goldilocks
I want to agree with you, but not sure. My Roadster with the same basic engine configuration would go straight as an arrow hands free. My 3R (glad to hear it's not just mine) pulls left. It does it coasting with the engine at idle and, although I haven't tried it, I feel sure it would pull with the engine turned off and coasting in neutral. I think something else is at work here.The engine rotation is along the line of the bike rather than transverse like inline triples and fours, and so it does pull to the left if you take your hands off the bars. It's the same torque twist to the left you will feel if you rev it at the lights when stationary.
Most of the exhaust is on the right, so that isn't it. One thing about this bike that's been pointed out is that the the front wheel is not centered between the forks. Oh, you, reader, haven't heard about that? Have a look and it will bug the crap out of you- sorry. Wondering if that might have something to do with it.
