I watched a video on YouTube that showed my exact problem. It had a link to this part AP5665171 Hub and it showed how to fix it. It was a fairly simple fix. I did not even have to remove the tub. I popped the cap on top of the agitator plate (AGP), removed the bolt hold the AGP on. I tapped on the bolt several time to loosen it. Using an angled screw driver, carefully and slowly lifted up the edges of the AGP until I could use my fingers to carefully pull the AGP off the splined drive shaft (must use caution not to break the AGP). Removed the U-shaped locking clip, removed the 6 screws that holds the Hub to the Tub. The old Hub splines were very worn (almost non-existent). You could really see and feel the difference between the old & new hubs. I lined up and installed the new Hub, then did everything else in reverse order. Screws, u-clip, AGP, AGP bolt, cap. I then followed the "Re-calibration" procedure listed on the instruction packet that came with the Hub (it was also shown on the YouTube video). After that, the problem was resolved and the Tub and AGP worked properly and sounded much better (no grinding)! It could be done quickly but it takes some time and patience to get the AGP off without breaking. Also, cleaning off soap scum and other stuff (after 3 yrs of use) took extra time. In the video, they found coins under the AGP. I too found 3 very worn dimes underneath. Perhaps this had something to do with the failure. The washer was only 3yrs old at the time of this repair.