Bought a predator and thought had good deal. Ran not even a tank of gas and it sputtered a little. Got doggy made it home tho and it didnt start the following day. I have no knowledge of stuff like this but tore into it anyway it turns out it had slipped time on the exaust side. Read up on timing tdc. And timing marks all on compression stroke. And reshimmed also. I got back together started right up got less than a mile and it popped and got little sluggish it slipped again on exaust side two teeth everything looked fine cgain wise teeth are fine feels tight but how is it slipping and why. Im nervous to ride again cause dont wanna further damage anything. How tight is the chain suppose to be and it also has tapping noise but i have correct valve clearance. Any help or suggestions ?