I could not get mine to bleed. My problem is the bleeder on these Howe TOB's is at the 2 oclock position and the feed line is at 3 oclock or so. I had to manually turn the TOB so the bleeder was roughly at 1230 and manually pump the pedal to bleed it. Not any fun!
Also found out the master has to be fully extended for it to "grab" fluid from the resovior. Mine was like an 1/8" compressed and wouldnt flow.
Live and learn! 🙂
I didn't realize you were using a hydraulic throw out bearing. When I used the Howe I just had to open the bleeder and let it gravity bleed. What did you use as a stop for the clutch pedal?. I used an appliance leg, drilled a hole in the fire wall and adjusted the leg with a nut on either side of the firewall.