I am looking at buying an older boat, a 1987 Dynasty with a mercruiser outdrive. If i put the shifter in forward, and spin the prop, it will turn freely by hand in one direction, and lock in the other direction, which i think is normal. If i shift into reverse, the prop will spin in one direction free, but when i try to spin it the otehr direction so it locks, it tries to lock, but with enough pressure it spins around more, and then it will get to a point where i get more resistance and it feels like it would stop , but it doesn't if i spin it with any force. does this sound normal? am i explaining myself correctly? <br />other than a ripped bellows covering the shifter lever, the boat is in good condition and if it checks out ok and runs ok in the water i will buy it...