Because your question is very specific to your Brand of coach, it may receive quick and accurate replies if you posted the question in the Tiffin Owner's Forum. On the iRV2 main page scroll down to the Owner's Corner. There you will find a forum for Tiffin Owners.
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