ive got a 306 d turbo to on a nreg and my brakes are not the best,they bite but theres a lot of travel before you get anything,i was told you can adjust this from the back drum,something to do with adjusting something in the top bolt hole,ive not looked at this so dont know if theres any truth in it or not but maybe worth checkin if your desperate and lemmi know if it works or not,im sure he said something about the back brakes are takin up most of the travel so you can adjust them to get a better pedal and put more braking to the front,its not that your brakes are psih your just not using them to there best,as i said dont know if theres any truth but worth a shot anyway