'07 YZ450F Getting ready to ride today and was checking my oil level..was a little low so i added, started the bike, revved a few times, checked again, added a bit more oil, THEN went to start the bike and couldnt get the kickstart to even move...I kept trying and finally got the engine to turn over a few times, but no fire, and an insane amount of compression buildup.. Tried to pull the bike off with my buddies fourwheeler but even in fifth gear the compression was building up so much it would only scoot the back wheel down the road. I know its a compression problem because i took the plug out and could easily push the kickstart down with my hand repeatedly with no odd behavior. SO..im assuming i've dropped a valve or two and they're stuck shut..either that or my auto-compression lever under the valve cover has broken...Rather than tearing into the valve assembly myself, i took it to someone to have them look at it for me, so i should know soon what the problem is... This ever happen to any of you guys' scooters before???