Allright guys, I was trying to remove the lower oil seal on the upper unit (lots of oil in the lower unit cavities and the rubber seal was gone) without removing the upper unit from the gimbal/transom. After tugging and prying on it (with a gear puller/screwdriver/hammer) decided that the water tube cover needed to come off. Dang, broke the first screw/bolt that I came to. Does the water tube cover need to come off to replace that seal? Any ideas, ? Anyone wanna buy a 78 I/O with busted sterndrive ?