Tried the scotchbrite again while brazing up the chain stays, flows quite a bit nicer. I also used less flux.. have FAR fewer pin holes. As to the old fillets not wetting out, I made a much hotter flame leaning more on the oxy and finnnnnnnnaaaalllly got it to wet out. Bonus points: got some of the sloppy spots to look much nicer =)

I have been so worried about putting too much heat on a joint that I think I'm actually not putting enough in the first place. My next goal is to get better at my edges so I don't need to lean on the file so much.

I'll add to Andy's note;

If one is going to make lugs to fit and are using a mill, a Joint Jigger, or similar machinery to mitre the frame tubes... Then it makes sense to take advantage of the machine settings. Thus as soon as one end of a frame tube is mitred, just pop in the 1/8" larger tube and cut its mitre using the same settings as its respective frame tube end.

Hope that helps someone save some setup time and maybe some filing time also.

/K