Standard Rotary treadle tension reassembly help!
I have been cleaning up a Standard Rotary treadle machine. It is a stout version with latest patent date of 1904. The stitch length slider is oriented at a right angle to the pillar rather than the version that is parallel to the pillar. Unfortunately, as I disassembled the upper tension a part or parts fell on the floor (yeah, I should be flogged!), and I am trying to reassemble. Yes, I have pictures if I can figure out how to upload. My question is, the spring closest to the machine has a metal washer attached that must go either between the tension disks and the flat cover, or on the outside of the disk cover. I am leaning to outside of disk cover because that would explain the mark on the cover. However, there was a felt disk I found on the floor that I can't explain. The indentation seems to fit on top of the washer with the bar that fits under the outer spring. Does that sound clear as mud? When I reassemble, the tension doesn't appear to release with the foot lowered.
I know there are some Standard Rotary owner here. I hope you can help me figure it out! Now to figure out the pictures...