Wanted to thank everyone for the advice, experiences, and update this thread. I was starting to lose hope/thought I was up against a bigger challenge since I had cut 1/2" off of all of the vacuum hoses that we touched when trying to diagnose the problem I had last weekend and the light covers would still come up after a few hours. Saturday I went ahead and trimmed the last of vacuum hoses and tested the check valve. To my surprise Sunday morning the hideaways were still down! Knock on wood that they stay that way and I wont’ have to put anymore work into this system for a while.