This is a custom built frame by Skip Hujsak. Columbus EL. I know this bike has been used hard, but don't know it's complete history. I have been watching this crack spread over time, hoping it was thick bad paint. I don't know any frame builders but an LBS recommended one to me. I plan to take it by another LBS I trust with high end older bikes to get his advice.
Should I go ahead and expose the braze? (seems like there is no chance it's not structural)
Are there any tricks to a Columbus EL frame that I should be cautious about letting a builder that I basically know nothing about work on it?