Just a shot in the dark. Early 80's Emergency-One approached Boston to deliver a contract for 100' aerials. The decision was made for a demo, Ladder 17 was given the demo (E-7-L17), they had their own still/working fire response, but were on ALL seconds+. Ran that rig to death, they went everywhere! In 1985 visited my mother, my wife wanted to visit Boston houses, we were everywhere, downtown (E4/24,E50,E10/AT/R-1. I got to buff BFD from my wife, she said this is probably a one shot issue, you know the house, you know the guys. Guys I went to college @ Bunker Hill CC. I ended up @ E53/L16, a kinda hilly house response area. Officer from L-16 said they were going through brake pads. They were running a E-One with a single rear axle, they fried the brakes. They were told Chicago ran the same rigs and had NO problems. There are NO hills in Chicago unless you go over a RR overpass. CFD has KME, seems to be a good purchase.