Hello all! I just bought this bike from a buddy. It is a 2002 yz426f that he told me was b bored to a 450. This thing is hard as heck to kickstart as I have found most bigger bores are. Well I just wanna know if someone can explain to me how to Find TDC on this thing. I pull decom lever and push down and it is still really hard then while still holding it I let it come back up and push it back down again. This time it was much easier. So on the third motion down is when I try to kick start it and nothing. If I kicked it a few more times about 1 or 2 on the next one it is as hard as ever to kick and I restart the process. Someone help! Is there 2 times in the 4 stroke that the piston hits TDC? When I try to kick start it should I clutch and decomp lever? I have already looked into getting hot cams but will that effect it since it was bored out? I will also ask the shop to determine the correct displacement just to make sure. Thanks very much! I have always googled my problems for my bikes on here and thumpertalk always had the best answers so I decided to register so keep up the good info!