Hey, I have a 2009 yz450f and have been converting it for off road's mostly riding single track and lugging up hills in 1st gear. I changed the back sprocket to 52 teeth (original 49) and just changed the flywheel to a heavier 9.2oz flywheel. However now my back tire spin if the bike is in gear but the clutch is engaged and it doesn't want to change into Neutral when the bike is running. I have to turn off the bike to get it into neutral.....any idea why this is? My would my back wheel be spinning with the heavier flyhweel with my clutch engaged? Thanks in advance for the help!