Crossfire 6 speed rough shifting

OWNED FOR 3 YEARS .SHIFTING IS LIKE OWNING A NEW CAR EVERY DAY. CLUTCH IS NOT CONSISTENT CREATING MISSED SHIFTS AND JERKY TAKE OFFS.CROSSX.FORUM BLAMES ELECTRONIC GAS PEDAL LAG RESPONSE.SUGGESTED SPRINT BOOSTER.IF I KEEP RPMS UP BETWEEN SHIFTS IT SEEMS BETTER ?