Does anyone know if Keystone will release schematics of the framing of the Montana ? I am trying to locate the studs in the dining slide of our 2012 3150 RL, and the studs in the rear-most wall sections just aft of the living room slide. The traditional thumping, stud-finder, and tiny drill bit methods have not worked for me. I am looking to anchor some straps with self-tapping screws, but need to locate the aluminum studs first. Any suggestions or diagrams or schematics most appreciated !