How do you define "feels" ?
Is this "feels" in a scientific sense, i.e. measured with a thermometer, or similar device ?
Or is it "feels" judging by holding your hand near it and estimating ?
There's a big difference.
Recently I was running in a cam, and was scratching my head trying to figure out why one header was glowing red hot, and the other wasn't.
After running the gamut of checks, timing, lean mixture etc, and fearing the worst, I later realised it was only hotter than the other because the design meant that on that side, the pipes were touching each other, and heat wasn't being dispersed so easily !! :bloated:
Never overlook the obvious, grasshopper. :wave:
Judging by your compression figures, it certainly seems like you have a head, or valve train related problem.
How is the valve adjustment ? Is there a lot of valve noise ?
There are many possibilities !!