Hi greg, If I'm not mistaken, I don't think you want to be running any cables through that surge protector. If you haven't already, try bypassing the protector to see if the problem goes away. Something to try anyway if you haven't already. The possible answer to why it's always Tuner 1 for you is if the voltage in the surge protector is interfering with the voltage range of Tuner 1. Just a thought.