Did you know this technique?
You have to make sure your K1 drum does not overheat AND that your K1 brake band engages the same drum at the correct time. Fail to do this and you can damage your 722.3 or 722.4 transmission or get lousy shifts
Problem & Solution
The B1 piston assembly is not easy to remove and then reinstall. Because of the length of the two big springs behind the cover, it takes a tool that has a lengthy throw. Some have used valve spring compressors, blocks of wood, and pry bars, and some work, but not easily, because most do not have the necessary travel to move the cover plate back into position, keeping it straight.