Durst AC 707 Autocolor Enlarger - Parts?

I brought a Durst AC 707 enlarger which appears to be in good shape except for the plastic gear/cog that mates with the track on the back of the elevation column is partially stripped. Does anyone know what the part number is for this or where to find a parts diagram? I did find a manual which was quite helpful.

If I can't find a replacement, I think it is possible to move the gear over about 1/4 of an inch to good teeth by offsetting it's location with washers and drilling a new retention hole. Just mentioning it in case someone else comes across this in the future and is also out of luck. I would clean up the bad teeth so they don't cause any skips (some are deformed).

You don't say whereabouts you are. If you're in the UK you could try http://www.northernphoto.co.uk. You could try them anyway - wherever you're located. Good luck. B.

Whoops. I've updated my location. I'll check that site though. I also received a recommendation to look at a regular supplier like Grainger or similar as the gear is likely not unique to this enlarger model.

I've found a user manual but unfortunately no parts list/diagrams.