There is a rubber insert that goes into the spoiler. Called Well Nut. The Au-Ve-Co number I have is 16248 and the size is M5 - 8 Range .035 - .232 in. You will need PanHead screws to fit into the countersink of the wing stand in order to prevent breaking the wingstand. I recommend brass or stainless screws and a little never seize on them in case future removal is needed.
Fastenal sells Well Nuts by various manufacturers. Grainger should also have them. I bought mine at an automotive paint and body supply but I had to wait for them to order them in. Fastenal had them on hand.
I also have a Well Nut number 8832. Range .38 - 3.96 mm. These are larger and I don't believe they're the ones I've used for the spoiler.
I used well nuts from vally fastners, I was forced to oversize the holes in spoiler due to rusted and siezed connectors. the post above should provide you a start to find your fix, good luck and good results
