Bought camper new 6 months later stapes pushing up on roof membrane. Dear says this is a problem and will eventually pop through.
Call keystone they say this is normal in one sentence and the next is they will put a vent over and that will fix it.
One problem there is approx 12-15 coming up. Had a camper previous to this keystone mt high country and NEVER had any problems in first 4 years and this one falling apart and quality is terrible.