The tuner reception issue is a weird one. I can get WRVV 97.3 Harrisburg from several mountain valleys away, near Fort Littleton. I could with the stock car radio as well. But I did for a while notice a problem. Turned out the antenna adapter cable had gone bad.

Is this your problem? Unlikely. But I have 2 tuner modules and they behave the same, both Rio modules, not kit.