In Picture # 2 some of the BB threads look golden like they might have needed to have added some brass to damaged threads. I haven't changed my opinion that those blobs on the outside were the result of really sloppy brazing. If the repairer was trying to add brass on the outside for any reason besides adding those bosses, he should have been able to smooth the brass out with his torch. If there is any brass on the threads then mechanically removing the boss is the best option. However it comes off, some filing is in order.