i recently removed the roof rack on my 1986 Olds Custom cruiser to swap it out for a nicer one. Upon re installation, I was having trouble fastening it down. The factory uses these weird rubber things with metal thread inside that gets glued into the roof. Almost all of these came unglued when I started screwing the rack back on, and would just spin in the hole. 2 of them fell into the roof and are now trapped in the headliner. The rack is not securely fastened anymore, and water leaks in through the roof. This has been stressing me out a lot.