@Old N' Grumpy Does your throttle side have a bunch of play in it?
Mine came with Avons, I have done some looking around at the throttle cables etc. and can't find any slack but there is about 1/2 or 3/4 inch rotation (on the circumference of the grips ) between being off the throttle and when the travel stops... Not sure if I'm explaining this well...
If i roll ALL the way off, until the grip actually stops, its takes a 1/2 inch of rotation until the throttle seems to engage.
There are a couple little set screws I thought might be slipping but like I said can't find the culprit. Do yours behave the same way?