There are spots on my slideout seal that are folded in and out but so far (knock, knock) I haven't had any leaking issues. I have been thinking that maybe some slide out seal lubricant/conditioner might help it to stay all folded the same direction.
That's not a good sign if the wall is spongy.
2006 23B Hybrid with 10k round bar WDH
2011 F150 4x4 SCREW Ecoboost, Max Tow, Integrated TBC, 3.73 LS axle, Firestone Ride Rite airbags.