My bike started stalling on a long ride the other day. I recently had the valves replaced and the seats recut. Less than 5 hours ago. After the bike stall the bike is really hard to kick over, almost impossible. Then after afew kicks it would it would get easier to kick over and then start. did this multiple times. Babied it back to the truck. Do you think the valves are out of adjustment? I also installed a new timing chain, maybe it's bad?