I am looking for a source to buy the remote used in a 1998 U270.I have changed batteries and it is hard to increase volume. I think it is a RC-CS-6. If I was at the coach, I could look it up but since I am not. I am relaying on the forum. I search the subject but not sure of what is in our coach. The last time it refused to work, I shut of the power to part that MOT...