Seam sealer fail - help

Strip it all out and start over with a different product. You don't want issues to pop up after its painted.
Ok so few weeks back, I tried a 3rd coat, smoothed it, then primed it with filler primer, a few coats. Looked like it was going to do the trick. Few days later I notice the caulk is flexible, too much so, if I lightly push finger into the seam , it makes a dent? I cover the car and leave town for a week. Now today I go check it, and now it is bubbling up and if I push finger it now tears and wants to come off. So I ripped it all out ( so fun) and now need to try the 2K stuff. I am already down $45 in the Dynatron stuff, and then $30 for a can of Epoxy primer that I used first, then another can of filler primer $9.

So this 2K stuff, how many tubes is it gonna take? These drip edge rails are pretty wide, and pretty steep towards the back. Eastwood sells a gun and 1 8oz tube for $45. it is 2K and blue. help is appreciated. This is completely hanging me up to get the car painted. all the other body work is done.