I redid the brakes this past spring, replaced the master cylinder, rear brakes, etc. My brake setup is the complete aerospace lineup.. front and rear aluminum 4 piston calipers, using aerospace's aluminum master cylinder. It looks (and probably is) the wilwood 1 1/16th" master cylinder. The problem I'm having is the first compression stroke of the brake pedal is soft, but the next stroke is very firm, like I want it to be. The car does stop, and it stops fine, I just want my first stroke to be firm like the second. I installed residual pressure valves up close to the MC thinking I was getting fluid flow out of the calipers, but they didn't make much difference. So I'm wondering if I have air in the lines somewhere, or in the MC. I did not bench bleed this MC before I put it in... unlike others, it doesn't have the bleed ports on it. Before I bleed it again, whats the best way to make sure I don't have air in the MC? Oh, since the lines enter the MC from under the fender, I'd rather not have to unhook the lines again!