Been using Speed Bleeders for years. Yea, the sealant can be a problem. The other day I bled the clutch on the LBC for the umptyfifth time and thought I might be getting some air around the threads, so used some Hylomar and it seemed to work OK, time will tell the next time I have to bleed it again. But, I can do all the bleeding by myself, and that's worth the price of admission.