I just became the second owner of a 4BW two weeks ago and the first order of business was removing those obnoxious decals. I planned on making my first thread/post about it but you beat me to it.
I used a blow dryer on the face of the sticker and was able to peel it off. I didn’t want to push it with a heat gun but it may have done a better job. There was residual glue which I used a few rounds of liberal applications off Goof Off graffiti remover spray to remove. There remains a very slight shadow line where the sticker used to be which is hardly noticeable to anyone but me in the right lighting. I probably could have gotten it all the way off but the sun went down while I was working on it and I couldn’t see it well enough. I plan to revisit it.
The one mistake I made was trying to heat the glue side of the sticker as I was pulling rather than the face of the remaining sticker to be removed. I switched halfway through and it left much less residue when heating the face.
FYI there will be a lingering orange-chemical odor from the goof off for a few days afterward but it goes away.
One word of caution is don’t scrub hard enough to loosen the fabric. Let the goof off do the work at eating the glue and just “wipe” it off.
I tried isopropyl alcohol first on the glue and it wasn’t strong enough without some aggressive scrubbing.
The can of goof off I had was old from doing this on a car years ago but I think the product is still the same.
If anyone gives it a try and comes up with any other successful methods please share!
Good luck - way better than a fabric sticker cover!