brakes not 100% yet

I had a similar problem with my duster about a month ago when I tried to stpr in my driveway and almost hit my intrepid but lukily after I pumped them agian it stopped. I took my master apart and the seals were rotted so I put a new master on and it brakes so good now with a nice stiff pedal you would think I put disks on the front. The new master only cost me $40.00. Good luck!!