I wonder if someone can help me out? I need to build 10 automatic pocket doors ( see picture ) I've never physically even seen a stepper motor before and I have no idea what "Nema" to purchase.. Each door half is like 40 lbs and they roll super easy. They will be controlled by a driver and a plc ( so they will ramp up and slow down ) so the actual stress on the motor should be minimal.. Anyone know what motor, gears and belt I need? Really appreciate any help. Thanks! Dave