I just came back from a long trip. My 2001 electraglide classic has been running like a charm. Just as I got into town slowed down to let truck into parking lot, then I started to gear up and when I got to 4th pulled clutch and rear wheel locked up and started to skid and fish tale. Kept bike uder control after 350 ft skid, liquid spray on left side and liquid run off when bike stopped. Any ideas? Bike still in shop. Tks Ian