2002 trail blazer back brake issues

well finally back to work on this trail blazer.thought we had all the parts.the cover gasket was to be a reusable one well this one wasnt and we have played hell trying to get one for it new will be here weds morng so i can finish up all was left was tires and cover and gear lube would have been done.so couple days i guess i will finsih it.need to rest anyway.lol