The yamaha shop installed the 2 spd heel clicker kit on my 06 apex, anyone have any experience with these and can i expect a noticeable improvement utilizing the apex's power. I have the secondary overdriven, key in timing, ulmer airbox mod, and 23 top gear, windage tray. The shop did everything else last year but the 2 spd. They told me how to fine tune
the setup with the shoulder wts/ in grams.