Hey guys, I'm Jamie and I'm 15.. Well I had a YZ80 but I never actually rode it much.. I have experience riding big bikes.. Well my dad is going to get me a WR450F Maybe 2004 Model.. Well my question is - I read about the Free Mods I can do to increase the hidden power.. There are guys who bring down the bike we want from Japan but they dont know what has been done to the bike or not.. How do I find out if the Throttle Stop Mod has been done? I havent rode a WR450F yet so I dont know the real power it should have.. From here onwards I want to do the mechanical stuff on my bikes... I understand a bit about Jetting now.. But not about the screw settings on the carb... Thanks in advance, Jamie!