Mike, again, I'm talking about 3M strips, something like that, that leave NO damage behind when you take them off. Used them around the house on all sorts of surfaces for years and never had any damage. Like the stuff on the back of GPS mounting discs, but something that works with our pebbly dashes. Honestly, I'm not going to gunk up the dash. My cars are all mint, I look after them. Anyhow, nobody seems to have any advice about such a magic substance, so I'll give up and go with the Pro.Fit thing from Crutchfield. No stickies, no screws.

I wonder if the previous owner used some kind of treatment on the dash, because nothing adheres to it. Sure doesn't seem like it, though. Same deal with the windshield. Wonder if some kind of anti-fogging was used, because suction cups just don't stay on. I can use the same GPS and suction cup in my 300, it stays for weeks without budging, but it falls off in the Xfire within about 10 minutes, max. It's kind of bizarre.