I have a 55 ax in my hangar 9 breitling i had a bad landing and had to take the cowl off to repair when i put it all back after tightening the prop the motor wont budge i was afraid some how the engine was hurt, but dont see how so i took the muffler and plug out and its clean as can be with no prop i can spin it with my fingers and it will turn it if i tighten the prop just slightly but as soon as i tighten the prop it locks! its a tru turn spinner and im installing the same way it previously was am i missing something simple or do i have troubles???