Did you try changing front brake flex pipes, sometimes depending on age of vehicle the pipes can collapse from the inside when brakes are pressed on the pressure is forced down but there is no force to release pressure when let off sometimes causing the calipers to stick on. Assuming that both calipers are new and not second hand I would try replacing flex pipes.
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Did you try changing front brake flex pipes, sometimes depending on age of vehicle the pipes can collapse from the inside when brakes are pressed on the pressure is forced down but there is no force to release pressure when let off sometimes causing the calipers to stick on. Assuming that both calipers are new and not second hand I would try replacing flex pipes.