Ala_xfire will surely read this thread, let's see if he can come up with a theory.

This evening, I'm going to go thru the service manual and think about what it's doing - for some reason, it is not holding "up" pressure when the top goes UP but it does when it goes DOWN. Again, the sequence is not right , but I can't think of WHY it would act this way.

Never seen this in nine years with these cars....