Has anyone had any experience with a Yamaha IT250 (2 stroke)? They're obviously quite old now but a friend of the familys got one for sale, he used to be a bike mechanic by trade and he's rebuilt it recently so mechanically its fantastic, just looks a bit rough. Thinking of getting it as a cheap fun bike if they're quick off road. Would be something I can go flat out on and not worry about dropping! Just worried whether its a good enough bike off road to warrent spending the cash on a toy?