I bought 2 220 bayous for $100 about 2 &1/2 years ago. I was told that one had a 250 engine and the other was a 220. When I got them, they were disassembled. After a few times of looking at another one, I had mine put back together. My question is, how can I tell if mine actually is a 250. I ride with a guy that rides a 220 bayou and he can't keep up. Suggestions?