i searched first, but could not find anyone with the same problem i have. this blazer sat for about 4 months, and when i got it it had a very, very firm pedal. i had to almost stand on it to get the truck to stop. since then it has been getting continually softer. the truck still stops fine, but now it is getting really soft. if it gets much softer i am going to start to worry about it. i can find no leaks, no wet lines, the MC is full. is this just the hydro boost working again? if it is a problem i just want to catch it before it gets much worse and i cant stop. its an 85 w/a 6.2 diesel. any ideas?