Engine Won't start
Hey
I haven't used the OS.. but i had similiar problems with a megatech ABC engine.
well it turns out the extra stiffness was due to too much oil in the engine. I took out the glow plug and turned the engine upside down and let the fuel flow out for about 5 minutes. Then connected the glow and hooked up the electric starter and it fired.
Hope that helps.. But if I am right the OS is not ABC so this may probably not help.