Hey Al,
Thanks for the info. I have been thinking for a while that is my problem and everyone here seems to concur. Glad to have a "real world experience" that indicates it can come and go.
Just curious as to why it would come and go. I could see if it had a leak until it warmed up and things expanded. Or had a leak once things warmed up and loosened a bit, but to do it on odd days and not even (for example) seems weird to me. Guess I'll just have to start taking off every other Tuesday except when there is a full moon

Thanks for the info/experience, I really appreciate it.
Kyle