Jim Becker wrote:indy61 wrote:. . . The original has an area that protrudes outward but I don't know what the purpose of that is.
I always assumed it was a stiffener because the screws had to be offset towards one end.
That was the conclusion Bob and I came to, which is why the flat one he made is a fair bit thicker than the original one. In any case, there was nothing inside that required added clearance, and it worked great!