We too fell for the "king bed" label shown in brochure, was not only disappointed but out right ticked, since it was a major factor in buying our 286rl. (Wondering if it constitutes false advertising.). Have also had other issues, remote won't work when we get it home, all 3 tanks had bad censors, two chairs had been damaged, bad blind, window out of track, and bed mattress has rip. I am so thankful we custom ordered it. :>). Not sure what we would of had to deal with otherwise. Taking it back in two weeks for fixes.
Now. . . Having said all that, we have a 4" memory foam topper plus matress pad. We use king every thing, it is a little large as previous post stated but no problem.
Are we happy? We love our 5er, (upgraded from TT). Dealer and Forest River have been good at trying to fix/trouble shoot issues.
Congrats on your new Hemispher, try king sheets, will have to cut down king topper, but no big deal.
Happy camping! ! ! !
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