trying to start my sky raider for the first time today its got a .52 evo engine installed with a 11x6 master air screw prop and a tru turn spinner on it also i primed it without the glow plug and after several cranks it tried to start but it made a loud popping sound in the lower portion of the engine but the trouble seems like the spinner is too tight or something ive got it installed excatly as it is shown on the instructions i double checked that do you think a 11x 6 is too much prop or what could be my trouble? i put a 10x8 wooden prop with no spinner it turns alot easier but my glow plug is weak so im chargeing it for a while before i try to start it again