Odometer Can't Get Past 999.9

[51woodie]

The Odometer in my '46 was "stuck" with the last numbers at 999.9 miles, so I sent it out for repairs. It worked fine, but is now back at 999.9, and has stopped again. Shipping South and Customs fees are costly, so the question is; what can cause this to happen, and is this something a fairly handy fellow (me) can fix? Has anyone had one of these open and taken some pictures?