JB Weld Epoxy, scuff the area clean with dawn and warm water dry off wipe with rubbing alcohol let dry while that is going scuff the top of the bolt with 320 or 240 sand paper clean same way then apply JB weld as per instruction mixing on package. After 24 to 48 hours should be good to go and replace that double sided tape with new 3m / Scotch 3m Brand Double Sided Tape clean prep those areas as with the other stuff mentioned minus the sanding. Get some 3m Adhesive Promoter apply to Area to where the replacement tape will be. When installing spoiler you only need to snug the Bolt not over tighten it the Tape and Pins will hold it with a snug bolt.