I'm a first time I/O owner of a 1992 5.7L Mercruiser with Alpha One outdrive. I finished winterizing and am considering removal of the outdrive to store it inside. I have no idea when (or even if) the last time it was removed was. I understand it needs to come off periodically for lubing. Everything I read says its not a big deal. Put it in forward, disconnect speedo cable, remove 6 nuts that hold it on and it should slide off. Is it really that easy? I understand that installation is a bit more complicated but still not a big issue for someone who is reasonably mechanically inclined. I may consider changing the impeller (as a winter project in the basement). Is that a big deal? Everything ran great this year. I don't want to screw up a good thing but realize that 13 years is pretty old and I don't know what maintenance has been done. Advice and words of encouragement are appreciated