Glad that it is sewing well.
If you were in the Denver Colorado area, I would like to see if I could figure it out for you. Lacking that, I am going to guess, that it probably has something to do with the metal (silver colored) pieces on the right side of the cam lid and opening. For a work around, I would suggest
loosening the screw at the yellow arrow, and see if you can rotate the piece - purple arrow - it is screwing into downward and toward the back of the machine.
[ATTACH=CONFIG]596017[/ATTACH]
Be careful, as one can never tell how long that screw is and what other parts are involved.
I watched
https://www.youtube.com/watch?v=2MTzrVmG-n8 and saw how to open and close the cam door, but I couldn't see the probable parts that were involved.
You said "Last night after reading your email I took the cover off the top and started turning the dials. Everything seemed to move like it should including the part you referenced. I found in the manual where it talks about turning the dials a certain way and the cam lid opens." If you can move the piece that I indicated in the above picture, with the top on, and lid open, try moving the dials in the manual that open the lid slowly and see if anything moves.
Good luck.
Something just thought of - I'm thinking that if the piece moves as indicated above, you may not be able to close the lid if the other parts that allows it to open is in the way. I think that the silver piece with the red mark on it may release the lid. I know padlocks can be closed even if not on the opening numbers, but unsure if that would be true of this machine.
Janey - Neat people never make the exciting discoveries I do.