I went to install my new PSI dial a dome head last night, and when I went to check the compression it wouldn't hold it was just leaking out pretty fast. So I pulled the head to check the o-rings that I replaced before I put the head on. They seemed to be fine, so I'm confused? I haven't filled with anti freeze yet so I don't know if that is sealed. It was 2 am when I was doing this so the probability of me missing something is high, ha ha! The only other thing I could think of is my compression tester went bad, which I will test in a little bit. It's a 2002 rmk 700. Thanks for any help!