Cobra 148 GTL 120-Channels Base CB Radio "echo poor" Questions

...poor SWR (greater than 1.5:1 or 2.0:1) can cause the reflection of RF back to the radio. Modifications can increase sensitivity of the mic to this unwanted RF. Have a 29wxnwst cobra. Installing ...

...echo and talkback mic, and I think that it might be related to the mic, if not something internal lot the split shaft pot on the volume/squelch knob. Any ideas? Moving the volume/on/off knob to make ...