I rang evey dealer in the country when it happend to me, most had heard of it happening, some had more than one bike back.
Most of the dealers were in the North (hilly roads etc) I came across over 10 casses of this happening.
Contact Riverside as they now doan exchange sump plug that is flat on the bottom, cant believe there hasnt been a recall but there you go, maybe there waiting till someone is killed
