
 Originally Posted by 
cjc_td5
					 
				 
				There is a steel ball under the aluminium block on the side of the casing, which gives the positive action for engage/disengage. It may be worth checking that the ball is there with the spring that pushes the ball in to the indentations on the shaft under it? The detent spring is pretty stiff, and they normally have a fairly robust action to engage and disengage, and don't really want to position half way.  
I haven't come across any issues with them wanting to jump out of gear. 
Chris
			
		 
	
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