A little update on the battery price issue. I got the part numbers for the Lifeline battery(GPL4CT) from Dale Dowdy and called Lifeline. Got in touch with Jim, who I think is the owner, and who has an 06 40' mid - door. He gave me a special price on the Lifeline AGMs because I was a member of the Alpine Coach Association, and it was a huge discount.
So I ordered the batteries from him to ship to my dealer, who agreed to install them for me, and I saved a bunch of bucks. It's only about 2 days shipping time from California to Washington. If any of you need batteries, and are a member of ACA, you really should call Lifeline at 626-929-6886, or 800-527-3224 and talk to Jim or Justin and get their delivered price. It's well worth the call.
So, now we're not going to do the Interstate Batteries because of Lifeline's deal, and I felt like I met a new friend in Jim as we stopped stories on what we've fixed on our '06's.
Thanks again to all of you for your help on this; I've learned a lot about batteries. And by the way, Jim told me where to set the Xantrex charger for the AGMS as well.
Former Owner, 2006 36MDDS
2010 Arctic Fox 22GK Travel Trailer
2007 Toyota Tundra