i have been playing for about a year with a borrowed set who's drivers were custom fitted for an above average height golfer.( just ordered my own standard set) Shots with the other clubs are more or less predictable however with the driver teeshot vary from fantastic to pathetic and i cannot seem to control this. Could this be due to the club being too long for me? i do grip it lower then usual but someone said to me that it unbalances the club amy thoughts??