your problem maybe that its still (titled) as a truck.
our coach is 36k and blue sky had no issue w/ covering it.
bluesky got too expensive (doubled w/out a single claim or infraction / speeding ticket), so we cover the coach w/ Allstate now (w/ the rest of our property & autos).
'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over