Has anyone had one lock up on them? I broke it in properly, ran it thru several tanks after, raced it on a track and then haven't touched it in a couple weeks. I tried to fire it today and it (flywheel) would get stuck. I would loosen it and bump it again. Then it got stuck and I cannot free it. I have removed the plug and am now taking it out of the car. Any suggestions on what it could be or how I should go about checking it over?

Thanks for the help! I am really bumming because for the short time I have ran this, I have really enjoyed it. I will be truly depressed if it is broken.