I bought my T3 new and have done a lot to it over the last 40 years so you would think I would know how to bleed the brakes, but I'm having a big issue. After sitting over teh Michigan winter I have no pedal. Bleeding didn't help. I replaced the original rear master cylinder with a new one and can't get the air out of the lines. I'm using a bleeding tool that you pump. The lines have previously been replaced with steel ones. All connections seem to be tight, no apparent leaking but I can't get it to pressurize. Any ideas?