I have a 1999 Jayco pop up and the old owner must have stored in damp a couple of times. I have scrubbed and scrubbed but cant get the black spots of the canvass. I don’t think it is hurting anyone it just looks unsightly.
I had expected to pay close to 2,000 so I was very happy with this price
I live near US border so just had shipped to PO Box and took my chances with customs. ( I did not have to pay anything extra)