in the 4 years i have owned this camper, it is closed nose down. there is no issues with the torsion bars, and this myth has generated from another board, and brought into this one.
my rear window has been an issue since a year after we purchased this unit. it would always leak in the up position, never when folded up.
Even with 3m extreme sealing tape installed last year, the window still seems unstable, but was fixed with a bead of RV flex on the upper ledge of the 3m tape.
2008 Nissan Frontier 4x4
2011 Rockwood A122