The hard lines dont fit, what did i do wrong? if i loosen them on the prop valve will they fit in?

 

Yeah, it would probably help if you mentioned what car you have and what master cylinder and booster you're swapping in

 

sorry. BB/MC ot of a 96 RS. 92 CX is the car.

 

What doesn't fit? Are both fittings the proper diameter? Does everything line up, but you just can't get the fitting threads started?

They take a bit of fiddling sometimes. Try lightly bending the lines over a long radius to get the angles just right.

 

I think the problem your running into is that you need to bend the lines a little. Although if its an ABS unit then its a totally different ball game.