I just joined this group; I know that Joanne would answer this question if I posted it on her web site, but I thought it might be useful for others if I ask the question here.
I have a 39 inch Ideal that has six treadles. I would like it if I could add more treadles; judging by the holes in the lamms, it looks like up to four more treadles could be added. What is not clear to me is how they would be attached to the structure to which the other treadles are attached. Thanks for this group!