lower unit is off the motor. impeller replaced. prop turns fine in fwd, rev and neut. when its in gear i can hear a what i would call rumble sound. i assume its the gears rolling. fresh lube in gearcase and no sign of fragments in old lube. ran perfect last time out. can i assume all is fine? i never paid attention if it did it before. no noise in neutral, maybe im not all the way in gear..
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