Hello, we are Fixin’ Stitchin’ Machines. We specialize in sewing machine service and repairs. This machine is part of our used inventory. If you are interested in having this machine professionally serviced and repaired leave us a message here on Ebay.  I believe the stitch cam can be replaced with a 1222 stitch cam.  The final stitches will be different than what originally cam with the 1212, but I think it would give you a fully working machine.  In the meantime check out our website FixinStitichinMachines.com