I have a '97 Fourtrax 300 4x4 and a '91 300 2wd. I can't believe how much faster the 2wd 300 is compared to the 4x4. Is this typical? Both bikes are running great with no problems. I just got the 4x4 and wasn't expecting it to be so low on power. I know there is about a 50 lb weight difference but this thing is a slug.