Well i bought another Napa caliper to replace the one with the bad threads. I opened the caliper box and this caliper has a lot of pitting that has been powder coated over. Overall i am not satisfied with any of the remanufactured calipers. So back to Napa it goes. I ended up purchasing two nice Arizona junkyard calipers. They are completely rust free and in excellent condition. I took them apart and the pistons are perfect. I bought some seal rebuild kits and will be putting these on and forgetting the “rebuilt” calipers.