I did abs delete on my 1996 JDM ITR and ran new brake lines and used a new prop. Valve from ek 40/40 and kept my original abs brake booster and MC. My brakes feel somewhat firm but turns out after doing a vehicle inspection my rear brake are barely working. My question is what did I do wrong and should I have used an rs prop valve 40/40 and non mc? Any help would greatly appreciate