Billy,
On that Ebay box of attachments, isn't the single foot on the machine that they are showing a side clamp foot? or am I looking at it wrong. . . all the others I can tell are back clamp for sure. Just curious, also can a jointed foot work on the 66-1? the one that was on mine (may not be the correct one) was a solid foot, but I haven't been able to get the fabric to move through either. . .I think it needs new feed dogs, but maybe it's the wrong foot also. What do you think could that cause the fabric not to move through?