I'm putting this topic here for informational purposes since it's solved.
When assembling my 1995/1994 Frankenbike (
http://www.motobrick.com/index.php/topic,8569.msg65996.html#msg65996) I figured I'd just swap out the heated grips from the retired 1995 and put them on the 1994. So I put the heated grips from the 1995 on the 1994, using the 1994's original grip assembly, throttle cam and throttle assembly cap. When I got them on, the throttle was notchy -- obviously something was funky with the cam in the throttle grip assembly or with the gears in the grip.
I spent the good part of a day taking it apart and putting it back together again before giving up and calling my buddy Mike B who was a BMW mechanic back in the 1990's. Mike informed me that I needed use the entire assembly from one bike or another, i.e. grip, cam and cap. You can't mix-n-match them.
I don't know how this is possible -- there is only one number per part listed on the fiche. All I know is using the entire assembly, i.e. #8, #10, #5 (tube, not including rubber covering), and #9, did the notchiness go away. I tried using just the 1995 cam and cap in the 1994 housing, no dice. It was all or nothing, or should I say, all or notching.
Like I said, I don't know why, all I know is that it was an unexpected, undocumented PITA that I hope noone else has to deal with.
