I haven`t used the resto Grip, so can`t comment on it. I have used the
Powermesh fabric to bridge some holes under the battery and behind the
R/F fender area, and the end of the rocker. took some work, but came out
pretty good. once the POR dries, it is rock hard.
I removed the back window, and had a rust problem all across the back
under the gasket area. used the Powermesh to seal off the pinch weld
area, and to cover some pin holes. then used the POR patch to build up some low areas, and seal the seams.
Now your channel, I don`t know if the Resto Grip need some backing or
not. Seems like it is like a Bondo filler, but I don`t know. I think the power
Mesh could be formed to work. once it is painted and tied into the existing
good metal, it should be rock hard once the paint dries.
I have used the Epoxy Putty, once that stuff sets up, it is hard to sand
down. that is some tough stuff.
I don`t think paint thinner will strip the channel, I mentioned paint stripper.
Once you get the channel painted and patched up, and the gasket glued
down, you will stand back and be amazed at how talented you are
.
OH, be sure to wear those mechanic Nitral gloves. that POR doesn`t just
come off easy. It has to wear off. and keep it out of your hair
. don`t
ask
.
Charlie