Mine does this in 3-4 the VTX is a great rugged bike, but its built like an AK47, Reliable, sloppy and not to any fine tolerances so there tends to be slop in the shifter, clutch, throttle response bla bla bla. you can start to make these better but you may also inadvertantly loose that reliability. so I have to agree with Bassdude try to lube and be deliberate in your shifts