One of my props doesnt self tighten like others do. It makes maybe 1.5 a turn and after i need to tighten it with hand. I flew with this prop all is fine. Before i had a prop which had the same issue. I threw it away. Got a new one. But as i understand new one or the other one started doing same thing. I cant be changing props every 2 weeks right? Anybody else has a prop that doesnt spin on till the end like others do? P.S. i dont use the wrench tool to apply them on, so that would be the reason.