I am going to fit one of those accelerator things to mt GS, the seem to get a very good write up for the cost, is there any significant difference between the extended version and the compact? I am not expecting the bike to suddenly become a blade scoffer but I would like to eliminate the low speed lumpyness of the motor and most of the reviewers said it did just that. I just don't know which version is better. Anybody any experience with these gadgets??