You could try lifting the needle with 2 -#4 washers and it will bring the fuel in a bit sooner.
Do you have a tach and do you notice a flair up in RPM when this happens?
you mean when i think its slipping? no it just seems to stop pulling as hard. but thats why im wondering if it could slip just enough where it doesnt pull as hard but doesnt slip completely where the rpms zoom up but the bike doesnt go.