Yea, I'm not sure why it isn't wetting or collapsing for that matter. I had the heat on there for a long time....Probably too long on my second pass...Didn't budge. Prior, it was filed and cleaned to the best I could. I was directing all my heat to the brass and it was hot enough to start making the surrounding tubes red. Structurally I'm sure it is fine, just looks like crap in a couple areas. I had a similar issue with my first frame and it seems to be in the same spot, at the ST/DT junction to the bottom bracket shell. It's in that funny little crevice where I can't get a good angle for the file. I saw a post on Vsalon where Steve Garro had a bent rounded file that seems to be right for that area. Made one this morning and had a little better angle to clean up that area.