I have a 1995 Johnson 60 hp that won't advance the timing. When I put the controls all the way down in forward the timing doesn't advance at all. When I try and advance the timing myself with my hands the timer base is completely seized. I have two of these motors and on the other motor when I advance the timing manually the timer base advances easily and snaps back when I let it go. I took the flywheel, the stator, and the timer base off. When I took the black ring out of the timer base the groove was full of corosion. I cleaned the groove, regreased, and reinstalled the timer base. I could only get the timer base to move freely when the timer base retaining clips where not tightened because the black ring was turning itself so when I tightened the retaining clips the timer base would not move within the black ring. Any help on how to fix this is appreciated thanks.