hello everyone, my boat has been sitting for about 8 months now, starts up without a problem but when i try to put it in gear the lever works but the prop does not spin, i can put the shifter in forward or reverse and u can see the levers moving on the engine itself but when u check the prop it is still in nutral, before i drop the lower unit to check the shaft i was wondering if it could be something on the engine itself. thanks for your help in advance