I'm looking for a "PINION", (BRP-Part#0303142).I have a 1981,EVINRUDE,25HP,ROPE START,MODEL#E25RCIM ,outboard.The "Pinion", is located in the back of the tiller handle and has a set "SCREW",(BRP-Part#0303951),and controls the throttle when you twist the tiller handle throttle grip.One of the...