What Wolf said. If its not internally welded, removing the rivets isn't that bad ( Dremel with fiber cut off wheel in a pinch, angle grinder better from the inside, mark your four quarter plates so that they go back in the section they came out of and glue fabric to each ( you can use and awle to creat each of the corresponding holes needed for reinstalation after the fabric is on ) and then rerivet thet quarter panels into place. We get our rivets from McMaster-Carr, a single box would do you which runs about $6.00 plus a few for shipping. Painting is also an option and an historical to boot.