i forgot, when i replaced the plug the old one had the center completly gone.
??

 

Yes that is the Extreme results of a fouled plug. You may need to check the timing.
Along with the others mentioned before. Does your bike ever back fire through the carb or through the tail on start up or shut off?
May be more of a valve issue.

 

never had it back fire since i put the new plug in. it purrs great and doesn't have any hesitation it just doesn't have much power.

 

Well if the motor is running good. Not missing or stumbling. Then maybe its (the motor) healthy and its a clutch problem. Ever had it looked at?
I'm kinda running out of suggestions.
New questions Automatic right?
Are you loosing power on take off? Does it still take off like it always did before?
Are you just loosing top end power?

 

never had anything looked at. i changed the belt once, and that's been a couple of years ago.