Went skiing. Pulled 2 skiers...after we were done...Couldn't get boat, in-gear. NO Forward & NO Reverse. Had to get towed-in. 1992 Maxium I/O..MercCruiser Gen2....Tried turning prop, by, hand..In-Gear. Wouldn't budge. (Thinking that's a good thing) Because if I would've been able to turn, in gear, I'm thinking I shouldn't have been able to turn, which, I couldn't..Shift-Cables, seem to be, intact...I Don't know...clutch Problem, or, cables out of adjustment...Any help that could be provided..would be Greatly Appreciated?...anyone with any thoughts?? Thank-You!!!