Qa1 rear shocks having play on 1964 valiant

Whats up guys.

Im wondering if anybody has used the QA1 on their rear with an 8 3/4. The top fits fine with mo play. But the bottom has some play front to back.

when i put the stock washer there is still play. Is there a specific washer set I need ?

Has anybody dealt with this ?

See pictures

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