Hi, I tried changing the waterpump on my 92 Evinrude 88SPL. I followed the manual's instructions and removed the shift linkage pin (put it in neutral), all the bolts, the little cavitation fin/whatever it is and bolts under it, and the lower unit wouldn't budge at all. I even tried hitting it with a small hammer, not that hard though, in case maybe it was just friction holding it on the powerhead shaft. I am doing this because when I went to start the engine after dewinterizing it I noticed (after only a few seconds) that it wasn't pissing. Second question, what type of fuel additive is best in your opinions since we now are using gas w/more ethanol? Any advice would be appreciated and I am grateful.