I've noticed alot of the guys racing harescrambles with me have swapped over to the 300 2smokers, many ride the 250's, but I'm still on my 450EXC. Should I look to getting a lighter bike, am I missing out on some speed because of the bigger bike. I'm so use to the big 450 helping me out of tight situations when I'm tired and my riding skills start breaking down. I'm afraid I won't be able to "lug" the 2 stroke and that the diff. in weight on the 250 won't be enough to outdo the loss in power. Anyone had this predicament? Thoughts? Perhaps I'll just keep riding the 450, I do like that bike!