We have an A-126. Before anyone enters or the walls go up, the camper is leveled and stabilizers are set in place. Then up goes the peak, making sure they are locked in place. Then up goes the side walls. We too have gaps at the peak sides where day light comes through. It appears most owners have this as well. We have had no leaks of any sorts and we have been through some real heavy, long durational down pours. We also just ordered a Bal-Leveler. So excited to be getting that. Stay Positive and Happy Camping!!!
Lynn & John
Point Pleasant, NJ
2011 GMC Sierra ExtCab 4x4 Pickup
2012 Rockwood A126