340 adjustable LOCKING rocker arm kit

The lifters are Engine Pro HT-2011B for a stock 340, don't know why the shims were used and rockers, shims, adjusters came from Mancini. CompCam push rods 7821-16 7.389"x5/16". Also, the first two rockers a flopping around and I noticed, where i'm pointing, there is a small gap allowing those two rockers to slide left to right.

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In the last picture is that first valve retainer rubbing that rocker arm?