1 ton axles, 4- 3/4 ton calipers on 42's. Stock M/C and Combo valve (75K5 Vacuum boost). I can't lock em up on pavement, even smashing the pedal with both feet (the pedal does not go to the floor BTW). After searching til my eyes went buggy, there's alot of opinions, but no answers for me. If you have my setup, or were in my shoes, what would you do, and why?