Have maintenance compare the fitted fingers, backing pieces and locating surfaces with the intended assembly. Keep the point versions. Also inspect how the spacer sits before gripping; an unchanged-looking tray is not evidence that every locating contact is sound.
Did the source inspection identify what supports that leaning spacer? The before-grip observation narrows the question, but it does not yet tell you which tray feature or part condition is responsible.
A worn support pad in the tray was below its specified height. Maintenance replaced it, and the integrator reviewed the accumulated point edits; agreed pickup and release checks now pass with the retained blocks and replacement tray.
Support-pad inspection is in the maintenance handover. Thanks, Isabel, checking the block before gripping stopped us treating its lean as something the fingers created.