I was recently doing some work on my lower unit and had pulled the trim cylinders and bushings off of their shaft/pin when I saw a little spring that was inside the end of the cylinder and around the shaft/pin come flying out. Lord only knows where is went? Must this spring be replaced for the unity to work correctly? It appeared to be a ground or something? Thanks for your help! 
Mercruiser 140hp I/O in a 1973 WINNER BIMINI
Mercruiser 140hp I/O in a 1973 WINNER BIMINI