Question about 904 tranny kickdown band adjustment

Is the trans lever all the way back when the carb is wide open? Did u verify this with a helper?
Yes, I blocked the gas pedal full open and checked it. I read one person's reply to another thread on this subject that asserted the kickdown band adjustment could affect shift points. Does anyone know if the adjustment can affect whether or not it will downshift at full throttle? That will help me troubleshoot the issue.