Kelsey Hayes SBP disc brake questions

I bought these a long time ago and rebuilt them with Centric pieces(pistons, boots, seals, anti rattle clips). There were no caliper to spindle bolts(or washers??)with them, so I bought some on here that are 7/16-20 and 1 3/4" long.
Question 1, are these bolts the correct length? See pics from manual.
#2 I'm assuming there should be washers?
#3, Centric anti rattle clips, these dont come close to anti rattling much lol, can I just bend these bitches down and over?
Thanks all
Steve

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