I ordered a bunch of 6.5" low profile pads with lip from autogeek, thinking they would fit on my stock backing plate, which measures just under 6". Well, they don't fit. Its really close. I have a smaller LC 4.33" backing plate. I tried it on the 4.33" backing plate and only the center part of the pad makes contact with the paint surface, which is nearly useless for me. Does anyone make a 5.5" backing plate to fit this machine?