Shifting black tank forward an inch or so?
I just bought a Sealant 500 Plus porcelain toilet to replace our factory plastic one, but when I got it in our 2007 International 27', I found that there was not enough clearance to the back wall for it to fit on the flange. The documentation says it needs 11" of clearance to the center of the flange and we've got a bit more than 9".
I could just give up and put the old toilet back on, or settle for the one that only requires 9.5" (I think it's the Dometic/Sealand 310?... I think I could make that fit). Or, I could be stubborn and try to find a much more laborious solution, like remounting the flange 1" or 2" forward of where it was. I've got the flange off already and notice I can wiggle the black tank around about 3/4" in any direction. Not quite enough.
So my question is: What's preventing the black tank from shifting any more than that? Is it something I could finagle if I cut a hole in the belly pan to access the black tank from the bottom? (Cut out some insulation, remount some supports, something like that?) I guess I don't really want a huge project, and I'd be okay with getting our second-choice toilet (if they'll let me return this one!), but I really want to make this one work.