I have an rs4 with the .18 engine that it came with. went through 3 tanks of break in fine. Went to start up 4th time and doesnt start. I figure its the glow ignitor. Charge it overnight and go back out to the field. Doesnt start. I notice that the flywheel (the silver peice used for starter box is not turning with the crank. when it gets to TDC, and i turn using the flywheel, it just slips. Not good. I take it apart at home i dont see anything wrong with any of the parts visually. Also the entire crankshaft is moving back and forth about 1/32 of an inch. My other 2 engines, the crank does not move at all. What am i missing? does this have anything to do with it not starting? Any insight would be apprecieted.

p.s. also i noticed alot of oil coming from the backplate and the front of the engine. I know there was a DIY on how to seal these engines. i tried searching but couldnt find it. Can someone post a link. thanks