I replaced the complete rocker assemblies wiyh the cam,no problems whatsoever,very quiet and runs great,also even though the chain tensioner ratchets it still has about 1/4 inc of play even with spring tension the screw driver will not fall down and only keeps the tensioner in place so that it wont ratchet forward i just pulled back on the tensioner slightly and pulled the cam gear off,i also checked the new tensioner and when you ratchet it forward it stil has about 1/4 inch or more of travel between clicks so easier for me not to have to take the tensioner out,road tested 200 miles man it runs great and this engine is so easy to work on,almost 300,000 miles no leaks and doesnt smoke or use oil it's a great motor.