[DanEC]

It tacks very quickly. Usually I put a thin bead down on the body and then apply the weatherstrip to it and quickly separate the two slightly and then then re-apply the weatherstrip back again. It's pretty stuck in position by then. I usually work in short sections and just apply it to 4 or 5 inches at a time. I use masking tape at corners to help hold it in position for a few hours until it is cured. I also try to be careful to not stretch or pull the weatherstrip when putting it on, especially in corners. That can cause it to pull loose over time as it shrinks back slightly. If you smear some on the paint it can be removed carefully with something like Dupont Prep Sol. 3M makes a release agent if you ever have to remove and replace it after it is fully cured.