The nylon motor gear on the Nikon MD-3 and AW-1 motor drives are often split, rendering these MDs useless. I have new press fit replacement brass gears that will never fail once fitted.

Economy airmail is $7. Please add $10 is you want tracking.

If you need an 11 page instructions for the MD-3, then it's $20 extra.

My new URL is www.soverf2repair.com