Buckroe,
unfortunately, there is no room to come out the bottom of the tank with an adapter, there is just no room. It has to come out the side, and therein lies the challenge of this design. Check this link out on a different forum, apparently this is not so uncommon an issue, and others have found ways to improve their system. http://www.crossroadsowners.com/forums/f14/fresh-water-tank-issue-8423.html
Of particular interest is the pic that Lloyd posted. (unfortunately, the link that was posted of 'Greg Paine' outlining this mod was not available to me to access, maybe someone else can get into it) It looks like there is a compression fitting through which one can insert a copper tube (maybe stainless would be better?). The tube could then be bent and inserted into the tank, and then the male end of the compression fitting screwed into the the stock adapter on the tank. Then the pex could be reattached to the other end of the copper/stainless tube. I need some time to research this fitting. Any plumbers out there? I've been buried lately and haven't had a chance to pursue this or get to the Elkhart factory, but am hoping next week to check this all out. I'll let everyone know when I get any new info together.
Hi Bill, yes, I think that this may just work with a little head scratching.
Dave