ok i gooogled spun hub my pro has about half a turn then tight can t turn prop while holding flywheel does a little free turn not even half though do i need a new prop
I wouldn't discount the spun hub. There is a lot more force being applied to that area at WOT than what you are putting on it by hand. I have one with a spun hub that I really have to pry down on by hand to make it slip but you can't run it on the motor above 1/4 throttle before it slips.