Plastic arch kit

[matthg40]

Just a quick question 2 of my plastic arches are Loose whats the best way to fix them to the car the rivets are fine they just ain't sitting on the body at the top and they look crap anyone got any ideas how I can stick them at the top

[Lost_Cause]

I had to cut away the flat section of arch that the rivets secure to the metal when I rolled my arches.
I used Tec7 sealer/bonder to bond them on. I put approx. 6-7 good size blobs (about 1" diameter and 1" high) along the length of the arch, then ran a fine bead of the same stuff along the edge.
I then used a variety of clamps ('variety' meaning what ever I could get my hands on) to clamp the arch in place for a few hours. When the clamps.....ah....clamp, a portion of the bead will squeeze out, make sure to get this off as quickly as possible. Will be a bit messy, but have loads of kitchen tissue/cloths at hand & keep using a clean section to clean off the bonder.
Others may know a better way, but that's what I've done.

[hayesey]

nothing holds them at the top normally, are your arches bent or something? 

[scotsjohn]

If you feel it's necessary, some 10mm panel tape helps.