Working just outside the Tampa area Vic. Very intermittent. I'm going to jump into the GAL operator cam assemblies. I'm thinking I may have a bad cam assembly contact block and/or it's shifting. If I lost the physical DOL circuit during opening that would cause DO relay to drop. Also, if DCL, in same cam assembly housing is defective the edge would be rendered inoperative because the controller would think the doors are already closed and then the edge is out of circuit. The non operative edge in the closing cycle is certainly a clue, although I'm not sure what that clue is telling me yet. Thanks for the input.