So you have a problem with a dinosaur. Question ? Is your imput also fluctating? Sounds like P1 cable with a P3 connector. Could be a P3 connector with a P1 Top on the connector . Question ? Are both high and low bands affected? Before you change out the housing when all other test fail, try removing your imput and reading it through a baff conn. , try placing a pin tp F in the output and then take your reading , give me all your varibles and I will help you. If you in the field call me on my cell and I'll walk you through it. Hope I can help.

"WHITFIELD"
I'd rather live my life believeing there is God and die to find out their isn't . Than to live my life as if their wasn't God and die to find out there is ! WHITFIELD