Actually, last weekend we bought a aluminum ladder at a local rv store for our QBOK too. We choose the 60" (shorter of the two available) and soon realized that the angle of the ladder was not to our liking. Plus, the fact that the step treads are square to the ladder rails, so it just wasn't worth the risk of an injury...I'll probably just rip up some oak and make my own.
Oh yeah, I plan on returning the ladder this weekend.
2013 Palomino Sabre 36 QBOK-7
2012 Ford F-350 SRW 6.7 CrewCab ShortBed
PullRite SuperSlide 18k IS Rails
2006 HarleyDavidson RoadKing Classic