Do you still have the auto oiler hooked up on yours? Mine's a 95 model, and it blew up on the previous owner when the oiler quit. When I bought it, I had it disconnected, and just mix it myself, that way I know. I always short my fuel just a hair to give it extra oil. On a quart of oil which is 12 gallons at 50:1, I usually put in 11 gallons of fuel.
Skipper