I have a '95 c85 outboard & need to pull the lower unit bearing retainer to fix the seals & have the shaft striaghtened. I've tried like crazy to pull it w/ heat on the housing, a big hammer & a large puller (snapped a 1/4" stud) & still cannot get it to budge. since its a saltwater only outboard I had to drill the covernut out to get it out & it was packed w/ salt. I have 2 lower units & neither will budge. anyone have any tips on doing this w/ out destroying parts?