My 97 Pathfinder, had to replace all brake lins,mast.cylin.,brake booster. Press brake down itholds. 2nd time goes to floor. These people have had my care for 13 days and can''t figure it out. Anything to do with computor or the ABS ?My Email is XXXXX@XXXXXX.XXX and there number is 252 247 2526. Please help me!!