Welcome Mila! Why not contact SSBC and ask them for reasons why this is happening? If the rear brakes are locking up, do you have an adjustable Brake Proportioning Valve? Gary H. -----Original Message----- ... 1 circuit drum brakes, non powered -> bought conversion >kit from SSBC to change front brakes to 2 circuit, powered disks. >Installation went okay, result 10% brake power in disks and locking rear >drums. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.