Good grounds on the radio? What is the S W R(standing wave ratio)? You need an S W R meter to check it. And i'm dredging this up from approx. 40 years of messin with the durn things on my big trucks.

As a side note I have 2 or 3 good C B radios in my garage-where they are gonna STAY.

Been retired a smidge over 4 years and DO NOT miss them in the least.

RIDE SAFE.