Determined that the problem was stripped agitator dogs. Ordered this short cam agitator repair kit and performed the repair in very short order. Problem solved! Only complication was the two parts of my agitator, the base and the auger, had kind of fused plastic where they connected. I had to use a screw-driver to chip away a bit inside before I could separate them. Then when I put them back together with the repair kit, I used a bit of plastic epoxy to ensure it would stay together despite my light destruction to separate. I then ran a load of towels on high agitation without issue!