stansoper - My TT has two slides on driver's side. When extended, their weight lifts the door (curb) side just over an inch. Therefore, we always try to level L to R with the driver's side at least an inch high before extending the slides, after which the unit approaches true level. I actually raise the driver's side closer to 2 inches, because the head of the bed is on that wall, which allows us to sleep with our heads slightly elevated.
eresidae - I would NEVER want to move the unit with the slides extended. I doubt that either the slides or the TT are made for those stresses.
2013 Windjammer 3008W
2006 Chevy Silverado 2500HD 6.0L w/Equalizer 4
Nights camped: 2012 (29); 2013 (26); 2014 (40); 2015 (43); 2016 (35)