Was reading on red kotes website earlier. They don’t mention using this much. Got my myself second guessing myself that he probably said 4 quarts which is in line with what they recommend.
That’s going to be more palatable.
I bought the SOR kit for mine and did it myself. I tore out all the wood and bought the welting kit. It wasn't easy but I was happy with the result. You'll need a sharp pionter to locate the screw holes. Take your time you can do this..