Hi, to start off this was my situation. I got in my car from some months of inactivity and the brakes did not work, pedal went to the floor and had very little stopping power. I did not see any fluid lost so I thought it might be the MC. Another month or so goes by while i collect parts. I see that the old MC is now empty but cant see any leaks. I replace the MC AND booster, bleed brakes and notice that the rear right caliper is leaking. So i replace the bleeder but it looked like some of the threads got messed up because it went in at a weird angle. I replace the caliper and no more leaks. I try to bleed but it looks like the rear drivers side caliper is now leaking so I replace that too. I see that the front bleeder screws have some fluid around them so I replace those too. I bleed the brakes well then set out to test drive. The test drive went well and brakes work again. I go out to return the cores for the calipers when my acceleration begins to suffer and steadily get worse until i realize the brakes have locked up. I was close to home so I tried to make it back and I did but with my calipers on fire . Both front were burning and rears were pretty hot. After it cooled off I drove the car back into the garage and brakes seemed to work ok. I have not checked the full extent of the damage yet. Details: I have the cobra 13 inch brakes in the front, bias plugs for the back. What could have been the issue? My only guess would be something related to the ABS?