I guess it's inevitable that I have to learn to do some of these things myself
My most intimate contact with engines has been pulling the dipstick, now I've advanced all the way up to propeller removal.
But I get the feeling that I'm not far behind my boat dealer's knowledge on some things, including memory. My impeller is starting year 4 now, and a quick quote for replacing it on my Alpha drive was 200 bucks. I'll have to investigate the procedure.