I have a bit of this issue with my BN6 too, but just one (1) small area where it's lifted off the cowl__maybe 1" long.
When I received the seal, it was wound up pretty tight, so first thing I did with it was to unravel it, and suspend it from the rafters with a light weight on the end. This helped a lot, but never quite got out that one bump. Not being one to rush into anything__and my own cars are usually the last to get my attention__it probably hung like that for several months...
I too tried the heat gun/tape, as well as rubber dressings (Ghumi-Phledge__it's a German thing) and though better, nothing has been a complete fix. I'm tempted to keep buying more seals from the various sources, until I get one that's not kinked, but if you know how much fun they are to replace, you learn to ignore it!
The first seal I put in seemed to deteriorate within two (<2) years, and I ordered the one mentioned above.