Marshall amps , stock fault ? c2003

Small square sub-board with the SM digital stuff on it. Held by 3 plastic standoffs but the "permanent" ends under the main board do not open up under the board as made for thiner boards. Only one tab of one of the 3 pillars was properly held underneath. Presumably they bought a batch of 1000 of those standoffs, or more Also another 6 months and one of the part "grey ring of death" solder joints under the mains fuse would have gone fully circular - low temp soldering iron test PbF again, plus coning (unmarked on board) other solderings looked reasonable for 7 yearold PbF