HEY GUYS IVE GOT A BUILT ZF AND IT SHIFTS REALLY NICE JUST 1-2 AT LIGHT LOAD CHIRPS TYRES SAY 3000 RPM AND ABOVE AND GOING BACK FROM 3-2 IT WILL COMPRESSION LOCK IF IM MOVING FASTER THAN 40-50 KM/HR IT HAS HITEC OIL IN IT ATM - WAS THINKING OF FLUSHING IT AND PUTTING TRANSMAX Z IN IT ... ANY OTHER SUGESTIONS ? A MATE HAS A BOX BUILT BY THE SAME MOB AND IT IS PERFECT / BETTER THAN STOCK SMOOTH AS AND SHIFTS AWESOME WOT CHEERS LADS , JACK