Congratulations on the new Precept, weekend with the grandkids, and welcome to the forum.
I can't help with your ladder question, but there are other Precept owners on this site that may have some information for you.
Sherm & Terry w/rescues Steve (std Poodle) & Eydie (min Schnauzer)
2015 Jay Flight 27RLS (Camped: 102 nights 2015, 90 nights 2016)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.