Hi Guys i have been trawling thought the all the threads about fly wheel weights, WR gears and Rekluse Clutches and im not too sure where to start. Is there anyone here that has a 07 450 YZ they are using for trail riding and has done some of these mods. I am an experienced rider and have had 4 years on my Yz426 previous to this new bike. I am looking to make the bike more rider friendly in tough technical situations. Before you ask, why i didnt get the WR i dont need the elct start and the weight disadvantage put me off it from the beginning. I also hit the MX track every few months. My first thing i want to address is the Clutch on the new bike, after riding the clutch and getting through a slow technical section the clutch's free play on the leaver gets very large ! Then after getting some air though the bike and it cools down the free play goes back to normal, anyone else had this? I am also thinking about getting a flywheel weight or a Trail Tech heavier flywheel so i wind up using the clutch less in technical sections. Any suggestions?