STARTED WITH ALL 6'S AND A 5 ON TRANS. BUT THEY ALL WERE EITHER OPENED OR CLOSED A TAD TO FINE TUNE IT TO BE DEAD ON 8 TO 1. CHANGING BELTS NEVER EFFECTED THE RATIO, COURSE WE RAN 5 YEARS ON THE SAME BELT BUT THE LAST YEAR WE OWNED IT HAD TO REPLACE THEM. IN ALL THOSE YEARS IT WAS GIGGED TWICE FOR BEING OVER WE TAKE IT BACK TO THE PITS HAVE A SODA AND GO BACK AND IT WAS GOOD.