Hmmm. I’ll have to give that a shot. I ditched the vacuum bleeder and did it the old fashioned way. Bled a quart of fluid and got all the air out. Was getting most of the air from around the bleeder hose. Still not getting good pressure. I think I’m going to go and get a new OBS master and see what happens. What is the best quality to get? I gotta figure something out. I took the RWAL out because I thought that might be it. Not the case.