Swill, I had that problem also until I started using tha fitting that
looks more like a plunger and takes up the whole inside of the silicone
bung. What a difference it makes, if you have this fitting which I
believe all the bleeders come with give it a try and Im sure youll be
able to do this quicker and with much more effiency. The temp
should be at 75* to properly degas also!