No trouble with our stabilizers, thank goodness. If I'm following you on the mattress issue, we've been stuffing a rolled up lap comforter where the "bend" is to fill in the space where the mattress is uneven. We use that so that when we slide in, the comforter is light-weight and slips right out from under the mattress. We haven't even looked at mattresses that have the bend in them to see if it could be replaced with something better - bet they're pricy since they're so unusual. That flaw in design is a disappointment; because overall, the memory foam quality of it is very comfortable. Really, for the most part we are very, very pleased with the Melbourne - no regrets. We're getting ready for our last trip of the fall. All total, we've been gone about 12 weeks in 2 to 3 week segments.
2017 Melbourne 24k - 2003 Jeep Wrangler
2013 Premier 19FBPR; 2013 Rpod 177 HRE
2011 Aliner Sport; 2008 Little Guy 5-Wide
1980 Shasta 21; 1981 Coleman Tent Trailer
1978 VW Westfalia; lots of tents