Just took delivery of 'Rude 4hp,4636M,56008 and it needs some help.I'm waiting for the manual but would like to get a head start. Seller claimed overheat, sure enough,some hack did a bangup job installing the impeller, destroyed the waterpump housing. I started to do a compression check and found the bottom spark plug hole was stripped out too. I removed head, cylinder walls look good, thank God, no scuffing. I wanted to open the lower unit but I'll be dipped if I can get the prop off, 3 blade plastic, 1 cotter key, I don't want to force anything, like it's previous owner.<br />I also own a 15HP 1979 Rude (I bought it new) so this is nothing new but the 4HP is a different little animal. Any help on the prop would be greatly appreciated until the cavalry (manual)arrives. Also, what's the opinion on the head, replace or heli-coil??