Watched APP videos related to Samsung front load washers, ordered all parts I thought I might need, made repair.
Took several hours to take apart and several hours to repair but it wasn't very difficult if you are a little bit handy at this sort of thing. Took my time as I only wanted to do this once.
Ordered a flange (spider), tub seal, door gasket, "shaft seal", and a couple of flange bolts to replace some I broke removing old flange. Parts arrived quickly and are high quality. I recommend having help removing and installing the tub to the washer frame. My washer had heavy vibration weights on the front and back of the tub. I removed the front weights before removing the tub from the washer frame. Also removed the stator motor the reduce weight of tub. I cleaned out the drain pump and hoses with a shop vac while the washer was apart. Very easy to do with the washer apart and I found coins in the pipe elbow that were blocking the flow. Use a little soapy water to ease install of the gaskets and seal.