Ford Fire Red! Thanks Griff…ok so now the rubber thingies….the black roof cement stuff didn’t dry. 4 days. I removed the tar ( complete mess)….does anyone know what the original double stick tape was? Or anything else that would stick to the rubber? I’ve test tried silicone and poly based “Phenoseal” caulk. ..it seemed to peel away from rubber rather easily….PS not in the mood to do this again…. TIA.
3M has the best double-stick tapes I've used. However, go to an industrial supply house like R.S. Hughes, Grainger, etc. and ask the person at the counter what they'd recommend. Strong and thin. The 3M tapes they offer are better than the Home Depot stuff.
Wish I had the rest of the roll, I'd send you some: a 3M sales rep gave me a sample roll once of the double stick they use to hold aircraft wings together, no rivets. I'd moved into a house where the previous very non-mechanically inclined owner locked the bars on the garage door, then hit the garage door opener button. The steel on the center structure pulled away from the door skin. Before calling in a repair guy I tried that tape, and it's still holding great after 20 years. There have been wild Central Texas temperature extremes on that bond line, over that time period!
Also, clean the heck out of both surfaces before you try to bond again. You might even light sand after using isopropyl alcohol, to put a fine texture into the surfaces, to allow more grip. Not too much texture, but a bit. Plastics are tricky, many are tough to bond.