Valve stem tip and adjusting screw misalignment
I am adjusting the valve clearance for my 2001 Ninja 500R. The problem is that the valve stem and the adjusting screw on the rocker arm are not properly aligned.
This makes one side of the gap thicker than the opposite side. See the attached picture with the two green arrows.
How should I go about measuring the gap? Should I measure at the thinner end and adjust the screw to bring this end to within spec?
As long as the cam lobes point up (for a given cylinder), and the rocker arms are at the highest position, does it even matter to look at the "C" and "T" marks on the rotor?
I am thinking no, but want to make sure.
When I put the cylinder head cover back, do I need to apply any grease or anything else to the gasket? I don't want any oil to leak.
I noticed the yellow color on the copper oil pipes, and also some purplish spots elsewhere in the cylinder head assembly. Should I be concerned?
Also, any pro tips for easily removing the cylinder head cover without loosening the throttle/choke cables? Removing the cover completely makes it much easier to
remove the copper oil pipes, adjust the clearances, and properly re-torque the locknuts. I ended up taking the radiator out just to create enough room to push back
the cover so I can get to the intake valves, and to get to the exhaust, it's still a bit of work.
Since the bike is already somewhat taken apart, are there any other maintenance that's worth doing or checking? Anything with carburetor, cables, or anything else?