I bought a 95 Honda civic did a auto to manual swap.the guy before me did some crazy stuff to the car and I’m basically finishing it. My problem is I replaced the prop valve with a 30/30 the one that was on it was a 40/40 but was leaking from rubber seal. I’m having problems when I start the car brake gets squishy, I replaced Brake Booster master cylinder bled brakes every which way I could and still have issue it’s cause car to idle weird when I press pedal and I’ve tried replacing check valve my only idea is possibly prop valve is the wrong one for car it has no abs and rear drums I have a 30/40 but I don’t know if that’s the issue someone please help