Superkevin11 wrote:
This may be a better solution though.
http://www.mcmaster.com/#rivets/=131vlu0
Those rivets are the correct type. They are often called "Oscar" rivets for RVs but I've only seen those in 1/8" size. I see that Mcmaster lists aluminum blind rivets in 3/16" and 1/4" diameters. It's not clear from the Carefree info. if the rivets really are 7/32" in dia. or that's the hole dia. I would guess that you could go with 1/4" rivets on the vertical rails and maybe 3/16" on the horizontal rail. It can't hurt to add a couple more for added strength. You may need to drill new holes if the existing screws have caused the holes to be enlarged or damaged.
Some online RV parts vendors have Carefree parts like PPLmotorhomes for ex. I don't see rivets on their online catalogue list though. It's probably easiest and fastest to order from someone like McMaster-Carr. An industrial fastener store like Fastenal has them. Harbor Freight also has them but I'd hesitate to use unnkown quality in a case like this. Ebay's another source too.
You may need a pop rivet tool that is the type with a rotatable head that will angle at 45 degrees.