Ok so i finally finished my LS1 brake upgrade and installed new drilled and slotted pbr rotors and pads im also using a 1Le master a wilwood single in single out adjustable prop valve and the front are right to the calipers for full pressure i finally bled all the brakes nice high pedal but every time i actually step on the pedal hard the master cyl cap pops off do you think i have to back the adjustment off of the adjustment **** on the wilwood prop valve or is something hooked up wrong

 

make sure the cap is pushed on all the way, and make sure that you have a little bit of air space in the top of the reservoir, i think it's supposed to be about 1/2" below the top..