in your paperwork/manual, will be instructions to "season" the canvas ends BEFORE you use it.
this entails wetting down the canvas ends and then letting them dry out.
this allows the seam threads to swell and expand.
also, be aware of condensation inside the tent ends when many close up their trailer at night and not allowing for air movement.
opening a vent and a little of a tent end window, will allow for air movement.
doing this and using Popup Gizmos or the generic 5x7 solar blankets will virtually eliminate any condensation.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC