I purchased a used 2012 RTS with 2400 miles. I raised the rear wheel to check/adjust the belt tension. There is vibration and what appears to be a bad bearing in the rear wheel. I pulled the wheel and checked the bearings. All seems OK. Don't detect any rough bearing issues while checking the bearings. The wheel was reassembled with proper torque settings. The belt tension was set to 160 Lbs and belt tracking is good. Still have vibration and wheel rotation is not smooth. I pulled the front pulley and the splines in the pulley and trans main shaft are good. Rotating the main shaft felt normal. Any suggestion?