'92 Maxima engine miss at idle

I'm hoping someone can identify this problem with a '92 Maxima. This is the second one I've had that has the exact same problem. The engine runs perfectly smooth on cold start, but as it warms up it develops a miss on #1 cylinder at idle. Does not miss off idle or driving. There is no apparent vacuum leak, but this feels like there is one. Compression is good, secondary electrical is good. I'm thinking some kind of vacuum leak at the intake gasket to cyl head, poor spray pattern on the injector, etc. Any thoughts?

yeah, sounds like a vacuum leak to me...it would be consistent with the problems you are having anyways...try checking it again