Kelsey Hayes SBP disc brake questions

I'm gonna have to go 3/16- 1/4" thick. Not exactly sure why this is such a puzzle.
Thanks for the help guys!:thumbsup:
My caliper ears are 9/16" thick, so, that may be part of your problem. I can't see how adding a thicker washer or two would hurt. I'd get some good quality ones though. Something hardened....grade 8 if they make them.