I have used these kits quite a few times in the past, every time I was successful. But the two kits I ordered from amazon just did not work right at all.
Both kits burst out resin after a few moments on the windshield. That never happened to me before in the past. I thought only the one kit would do it but the same happened on the second one as well. They both leaked from under the sticker and both lost suctions on up and down suck.
I tried my best to salvage it by just putting the extra drop and the plastic down and curing it but only time will tell if they are successful in stopping it from cracking more.
I will have to keep my eye on the windshield because these both burst before working out the air.