Gazim...I was led to believe that the front and rear outlets on your master are different.
Think about it... The front brakes need to actuate first (they do something like 80% of the work)
Is it possible you have/had them mixed up?
Remember if it's the under floor set-up the m/c will be back to front,relative to a conventional firewall m/c.
Have you checked the pushrod free play? I would say adjust the pushrod 'till you get about 1/2" play at the brake pedal.
Maybe worth checking, I hope this helps.
Jock.
