Could I use the battery disconnect and hardwire the radio memory wire to the battery so I don't have to reprogram it every time? This is assuming I can't find the issue of course.

 

I don't see why not, it's a Rover, anything is possible. You'll find the issue, I keep the faith. It's still a good idea to use a disconnect just to keep a good charge on the battery if your not using it daily. It'll save your battery from short life.