Every time my son crashes on our 05 CRF250X, it is hard to start and sometimes will not turn over. I charged the battery, but it only helped a little. When this happened before, I took off the valve cover and found the decomp lever stuck. I play with it a little, and it frees up and everything is fine. So my question is, should I replace the decomp lever, the cam, or both? The bolt is tight, so rule that one out.