A hardy Hello to a "neighbor" aka Montana RVer
As the other folks said your converter has been given a bad reputation here on RV.net. From what I have seen over the last several years it's mostly due to poor installations not the unit itself.
Just returned from over near you earlier this week at the Thompson Chain of Lakes - great fishing and wonderful boating - back home for the weekend to stay away from the crowds
Suggest you check the voltage directly at the house battery - this way you will know what line losses are occurring and what is needed to get it fixed up. My WFCO 75amp has a manual override that can easily force the output to 14.6 Volts - Do the measurements and if things are not working as you expect send me a PM. I have been doing this stuff for 40 +++ Years and enjoying helping out