Spend about $50 on a tool, then butcher it, or spend $0 on parts from the junk box, and butcher them? Time would be about the same. I made my slant six spring removal tool from a pair of old rocker arms, and a section of shaft, and used the rest of the shaft as a lever like on the proform. About 1 hour time. Plus I didn't have to wait for the mail.
