Prior to valves adjustment, bike was normal. Took a few shims out and completed the adjustment, put back the cams on correct timing, fired it up to hear very loud chain rattling from the head cover. I then took out the cam chain and inspected it with the cam shafts sprockets and guides. They were all looking fine without any wear. Put everything back and the loud rattle sound did not go off. Did resistance test on ignitions coils and they were all healthy. OEM Cam Tensioner was working well too. Would anyone please tell me where should I be looking at? Or did I miss something? Bike fired up quick. Loud chain rattle sound was louder than my de-cat scorpion end cans. Removed the air box and I could hear very clearly the sound is coming from the right side. Felt strong vibrations as the cam chain rattled loudly.
Usual method , reset tensioner(remove tensioner plug and spring and push plunger back) install, then put the tensioner spring back in. I do this with the valve cover off. As you reinstall cam tensioner spring you hear the tensioner plunger clicking as it tightens.
(if you have an oil line on back of tensioner, you might have to bleed it to remove trapped air, usually not though)
Then I slowly roll motor forward, this pulls tight on the front side of the cam chain positioning slack on backside where the tensioner is. Slowly turn forward gently until I can realign marks to verify cam timing.
Then I turn motor back and forth to make sure there is no excessive slack.
Sounds like your tensioner might be stuck.
I would pull valve cover back off and turn engine, verify timing and turn back and forth looking for excessive slack, if need be pull tensioner again, disassemble and look for any stiction problems.