No compression?

[ZombiePotatoSalad]

SO make it the same

SO it's stuck and I can't extract it. Is there a way I can remove it without damaging it?

Due to the rust on it before, when I loosened the nut, it twisted the bolt out, too. But now, it doesn't grip like that anymore.

[roeme]

The problem is the nut. It doesn't want to tighten. I believe it reaches the end of the thread before it fully tightens enough to hold the head down.

Just add some washers. It's what a PO did on one of mine.

[ZombiePotatoSalad]

Found the issue: the valves are bent. All of them show varying degrees of light when a flashlight is shone under them. I'm going to replace all of them. I don't think that the valves have ever been replaced on this thing, or it's been a long time.
Where can I get a set of intake and exhaust valves for a good price? And they're all 32, right?

This naturally begs the question: will any 32mm(?) valve work, or do I need to find specific ones?