Be careful when going past the normal 90 degree range to avoid damaging your servo.
To find the settings that make your servo rotate as much as it can, first set the min and max values on the channel settings tab in the Maestro control center to a wider range. Then, use the lowest possible supply voltage at which your servo moves, and gradually move the slider on the status tab until the servo does not move any further or you hear the servo straining. Once you reach the limit, immediately move away from it to avoid damaging the servo. Finally, return to the channel settings tab and configure the min and max settings to never go past the limit.
Normal continuous rotation servos will probably work with the Maestro.
In response to your second post, could you please provide more information? What pot? What post? What program?