un-fluxed, still hot. THIS is how a fillet braze should look.
checking the clearances.......in framebuilder speak "dummied up".
i went all out. i even drilled these vent holes bigger to cut .002 of a gram or sumthin........i drilled all the vent holes bigger, and trimmed the seat tube sleeve 1/2"........ see the silver stuff? well....it's silver. i like when the silver comes out the vent hole from feeding into the top of the socket. that shows that you got it all throughout the socket = well attached!