Your machine is made on the Maytag Performa platform. Any and all service literature that applies to Performa also applies to your machine, so find the Performa manual on this website and get busy
You cannot do this repair unless you have the $100 brake tool from Maytag.
All the other stuff you heard elsewhere is not true. No screws have to be replaced, etc. This is a straighforward repair, you simply have to do it right. Asthe instructions show in the manual, the snubber ring is lubricated only with plain cornstarch, so have some handy to sprinkle around the snubber base when you have replaced the Delrin ring. This is done to prevent any oil or grease from getting on the area. If your lower seal on the transmission is leaking oil, it will also cause the machine to stay wobbly. If you have signs of oil under there, specially under the white cap on he drive pulley, you'll need more than the snubber.