A s bike we had had a bad bearing in the transmission so I found an e bottom end and assembled the engine using the e bottom end and the s cylinder, and complete head from the s. I used an e base gasket if that matters. I never heard the bike run before it was disassembled but I can't imagine the noise was present then. Well I pulled the valve cover of and set the engine to top dead center. One of the intake valves is in spec and the other 3 valves are too tight (under spec) how would that cause valve noise? I've researched top end noise on drzs and its pretty consistently valve noise. I've also confirmed it with a stethoscope. So is there anything that could cause the noise? I've heard of valve clearances too loose that cause noise bur never to tight. Now I've ordered shims and will correct the clearances but I'm just curious if there is other possibilities. All the can surfaces and lifter surfaces look mint too. Nothing abnormal.