I already have a 14 tooth on the countershaft. Not sure what stock gearing is, but I wanted to drop a tooth to shorten up the gears some for woods riding. If I do that, I might need the FWW to slow things down. The hit really isn't too bad right now. It seems much more manageable than the 96 CR250 I had, but I would like to make it as much of a tractor as possible :)
I should be able to get it out a bit this weekend if it's not too cold and see how it behaves on the trails. It is amazing how much torque the 250s make, just turn the throttle and up she comes :) It is entertaining in sand in the open, but not always the best when navigating singletrack :)