Whether or not hammers received off-rail prep, on-rail prep comes next. This will include solving overly loose pinning if present (the overly tight having been solved before bedding and sampling). Support shanks with a long screwdriver and move it side-to-side. Any shanks that follow with that small amount of contact friction will be candidates. And watch hammers bounce on their rest cushions - more bounce equals less friction. These tests can also find a damaged flange or birdseye. Or a loose hammerhead.
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