I'm making my first mods on a 212 and noticed that it's very hard to turn right now with the side cover off and the cam out. I even hear somewhat of a scratching sounds as the piston reaches TDC and then once it turns over it frees up a bit. Plug has been out but I don't think there is anyway something could have fell in the plug hole. Anyway, something seems off, what do y'all think?