Crooked Pop Top

[bebling]

I have a 1988 C22 that I picked up from Utah last year. Among other things the pop top when raised misses the mast opening by quite a bit. I see no loose fittings and nothing seems amiss. As you can see in the photo it misses to port side by a good 4". Any ideas of what may be the issue and a fix?
Thanks
Bruce Ebling
C22 Full Circle