Mine also touches the top of the door if let all the way out. However, it can't be moved up attachment wise as it is all the way at the top now. We let ours all the way out and then just back up and take out the slack. Only a couple of inches at the most so no big deal.
2010 Jayco Quest G2(SOLD)
2014 Jayco Eagle 33.5RETS
2007 Ram 2500 5.9L Cummins(SOLD)
2015 Ram 2500 6.7L Cummins 4WD