Older 125 and newer 80's have a pressed on gear. How well does this pressed on gear drive? Anybody have issues with it spinning? I have not ran across a setup like this before and am dumbfounded as to why it is set like this,and curious how it has held up? A 76 rm 125 is how I found it,and seen it again on a newer 80,the 250's and bigger are set like I am used to seeing! You have gears that spin free,or driven by splines,not pressed on!