[Yooperforeman]

Same here,gets noisier as it heats up.I set the valves at the factory spec. with the engine cold and it's so noisey that I couldn't stand it.I ran it until it was hot and then measured the clearance,it was over .010" ! So as the engine heats up the clearance increases.Next I tried setting the valves with it hot and at .004" HOT it sounds almost right.I think I'll try setting it a little tighter and see what it's like.

 

[Yooperforeman]

On Sunday we rode 84 miles and everything was fine.No valve noise.What I did was remove all the plastics and set the gas tank aside and remove that plastic shield so you can see the engine,then run the bike until it is very warm,now set the valves at .003". Doing it this way your sure to get the valves set when they're hot.