So I opened the brake fluid reservoir then I removed the rear calipers and old brake pads then inserted new brake pads on one side after compressing the caliper. I went over to the other side but I could not compress the caliper it's like gets stuck and it's crooked it's not straight I try to straighten it out but it just goes crooked again when I try to compress. Now the Piston came out of the boot through some foolishness of mine and I can't get it back in