Sorry, that might sound a little odd but i need some tips about maintaining the gear lever. I already got through 2 levers in just 7 months because the teeth completly wore and the lever couldnt hang on to the shift shaft. now i baught a new one, yamaha geniune off course, and i dont want it to end up like that too. So, every few rides the lever naturally get a little bit of free play on the shaft, do i just need to tighten the bolt a little bit, or do you suggest replacing it every time? consider that the tighter you put it, it bends a little in his home and in my last lever the bolt just broke inside and i needed to drill it out to get the lever off the shaft! also, is there any kind of special washer or bolt which is recommanded?