Emmaus Road-
First off, welcome to iRV2!
Second, you should add a "signature" to your profile. It contains whatever info you want; most people put info about their coach there, so they don't have to type it into each message. Instructions for adding a signature are
here.
Re: The transfer switch. If you coach has an IOTA ITS-50R, you should replace it, even if it works now. That model has a safety recall (could overheat and potentially start a fire). The next question you may ask is what is the replacement for the switch? This thread answers that question:
What brand of 50 amp transfer switch is best?