The fan clutch bracket is the part that the fan clutch bolts to. The clutch is the part that the actual fan blades are attached to. If it is wobbling change the fan clutch bracket. For a competent diyer it is doable. Sounds like you already changed the tensioner. The fan clutch bracket is where the fan bearing is located and and in my experience they do need replacement around 105,xxx miles.
Dump the plat plugs and go with copper.