What kind of reputation are you comfortable with? A lot of us "more then hobby but not full pros" do some repairs that in hindsight we would reconsider later. It's part of the curve we learn on. Where along that curve we find our sweet spot changes as we look back.

One thing that I have found to be the case with any repair is that it takes longer then I initially plan on. Then when the results don't really meat my personal standards I question my initial decision. Over the years I've done less and less repairs, choosing those where I find gratification in (because the $ don't equal my efforts usually).

I agree with Eric's thoughts on why the cracks happened in the first place. Over cooked during brazing, twisted alignment "corrected" at the factory, poor initial fit up or other won't be fully corrected by a quickie repair. Unless the frame is something special, the customer isn't hoping for a rider or you just want to learn at any cost I'd question this job. Andy