maybe You will know what to do...in Renault Club Poland, Retro-Renault Club Poland, Gregor (from Castles in Slovakia), my father...nobody can't help me...

I have very dofficutl problem with brakes...there isn't air in istalation, I've new brake cables, rear brake jaws, front brake blocks and when I put down the brake pedal:
- sometimes brakes work but after some time - with delay (put down the pedal, wait 1-2 seconds and then R4 starts braking)
- sometimes brake pedal gets down with no resist, sometimes it's work good
- sometimes braking is "strong and quickly", sometimes it's very weak (just like release brake)

I have no ideas how to make it good ...I've 1 month work with brakes and I'm sick of brakes