SV650 Brake Bleed Issues

Update: See end of next brake video
Brembo BMC: motomummy.com/...
Having trouble bleeding my front brakes on the ‘05 GSXR 600 front end on my 03 SV650. I rebuilt the calipers when I put this front end on, less than 3,000 mi ago. I rebuilt the stock GSXR master at the same time. I've bled and bled and bled and bled and....... Finally replaced the GSXR master with a Brembo unit to eliminate the recall issue from being a factor. I put teflon tape around the master bleeder screw. I get no bubbles with pressure bleeding at either of the caliper bleeders (speed bleeders). I get lots of bubbles (only at the master bleeder, not at the calipers) under vacuum, only with the master bleed valve cracked open. What am I missing?