Somehow got water in lower unit (Yamaha 30MLHQ) & subsequent shifting issues after winter storage (didn't do any winter prep). Maybe had something to do with impeller replacement last year using old gaskets. Have damaged lower unit casing ID threads that hold spanner nut for prop shaft. Debating whether to buy parts & rebuild or purchase used/rebuilt lower unit. Seems to be $500ish for used unit, $1300 for new. Haven't priced all the rebuild components.
