I just adjusted the valves on an '06 YZ450F, and ensured the cams were aligned both with one another and with the crank, and that the cam chain tensioner was functioning properly (per the manual). Got the bike back together, and there is a TON of friction at the kickstarter. At first it wouldn't even turn. Started to move slowly and is kinda moving easier now but no firing at all. The bike sat for a good 4 months or so before that, so I put in some new gas and cleaned the jets out with carb cleaner. It started fine before all that. Any ideas? Trying to go ride today!