the manual with my trailer (since I just bought it i've been reading it thouroughly) and it STRONGLY suggest you store the trailer level. The reason given is because of drainage - window channels, roof seams, etc are all designed to drain properly when the TT is level. Non level can cause water to backup and seep in.
Jill & Chris, Wills (14) Evie (11) & Toby our collie (5)
2011 Grey Wolf 28BH
2013 Chevy K1500 Crew w/ Reese StraitLine Dual Cam
Nights camped 2011: 11 2012: 18 2013: 12 2014: 12 2015: 13 2016: 3