Heynow! I am trying to pull the pinion gear/clutch on my 5ive T 2.0. I have a DDM racing piston stopper. However, when I try to thread it in the spark plug hole, it is hard to turn. It is not cross threaded, but it won't spin in near as easy as the spark plug. I stopped when I met resistance, as I don't want to damage the spark plug hole. Is it supposed to be resistant to threading? Thanks much!