Hi all, after some advice about gearing for EC GP circuit. Bike is an 04 GSXR750 running 15 teeth on the front and 43 (standard) on the back. 2nd gear is too low around most of the back of the circuit and 3rd gear seems too high. Not too fussed about top speed but would like more drive. What would folks recommend? And any recommended places to purchase other than ebay? Will be replacing chain as well so might go for a 325 conversion kit.

Thanks, Andrew