Hi john petriew,
Welcome to iRV2. The information you need might be found sooner if you post this question in the National Owners Forum. On the iRV2 main page scroll down about 1/2 way. There you will find the National Owners Forum. I suggest this because nobody knows your coach like someone who owns one just like yours.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours