I recently looked at a Samsung toploader, at request of my sister for one of her coworkers. Complaint of the tub bucking like a bronco during final spin, causing repeated Ur faults and refills for redistribution. Machine is 3yo. Spins perfectly when empty or with a light load or items that are nicely distributed. Household of two (and two puppies), the missus seems to wash small and mixed loads often so perfect balance isn't typical. All signs pointed to the suspension rods at fault. Service docs I found are typical Samsung-murky.
Opted, with the fellow's approval, for substitution rods claimed to be more robust than OEM, and a claimed 3-yr warranty (LOL). I planned to use Sil-Glyde or lithium grease to lubricate the the suspension hangers at the cabinet and tub mounts. An unanticipated glitch was that the (residual) Samsung OEM "grease" is an extremely thick and sticky kind of something that apparently serves to help limit the movement of the hangers. A can of it prices at $70 to $90, which is dandy for servicers who use it in quantity, not so much for a single job. I scraped what I could (which isn't much) off the old rods and hope there's enough remaining on the tub mounts to have an appropriate effect.
The tub is more sturdy with the new rods, less oscillation and bounce. So there's that.
Disassembly to raise the top for changing the rods involves first removing the control panel for access to 1) dismount the machine control board module for access to disconnect the pressure tube from the water level sensor, and 2) remove the two rear screws that anchor the top panel. Three ground wires and two pump wires must be disconnected.
I suppose if there's a question here, it's whether anyone can recommend a substitute "grease" of equivalent properties as the Samsung OEM in case lack of massive quantities of it on the new rods does lead to a problem with excess tub oscillation.