axis lag adjustment

Hi I'm not getting an * after a program line so it isn't in position delta 20 with servo dynamic drive control Baldor servos. I'm not having much luck getting the drives adjusted I know how to get into the TM4 screen but several people have told how to adjust lag.Some say to adjust while axis is moving. One said while axis a stationary adjusting the balance pot wont bring the lag down to zero. most are at .012 or more. how many turns should it take to get a change I can turn and turn and nothing changes. Thanks