These are older sewing machines. I just bought a 2600 that's in great condition, but came without any of the embroidery cams to make some of the fancy stitches. I found some #777 cams for sale, and from pictures they appear to be the same. Does anyone know for sure if the cams can be used in both machines? It will help me decide whether to buy the #777 cams or not. Thanks for your help.