[2StrokeJunkie]

joel im running a ported and piped 5 speed top end on a 4 speed gearbox . i experience this HUGE drop between 3rd and 4th and i need to keep throttling the freaking bike , there is no cruise mode and it gets out of the powerband easily as the powerband kicks pretty late , only hope to overtake is cut a gear , wring throttle and hold on for dear life . i am planning on going for a 5 speed or an RXK gearbox to help me sort out this issue , i believe getting the gearing and sprocketting right would sort out this problem rite ? please advise . my options to sorting out this issue are :

1)get an RXK or a 5 speed gearbox
2)get a new barrel and port ( used mostly in city traffic - do i need a 4 speed or a 5 speed barrel ? ps: i dont have a 5 speed head )