What brand of loom do you have? My toika requires that my upper lamms be angled towards the shafts, while the lower lamms are parallel to the floor. That might change the geometry, if that is relevant to your loom. Have you been using "top of the lamm" setup? if so, you would want the holes to be above each other so there is less friction on the Texsolv cords going down to the treadle. I have mine setup this way, but at this time I only have 4 shafts hooked up. Getting the other 4 shafts hooked up will require more time and more Texsolv. I have the texsolv, but I've been busy with my time, lol. I want to get the 8 shafts up and running now that I've been weaving for a year. I believe I'm ready.
Another thing, Toika Looms have different dimensions than Glimakra looms. On a Glimakra the back beam is higher than the front if I study the diagrams correctly. That might be why they have the shafts front to back elevating at each shaft, so there is a straight angle/elevation with the warp. My Toika is the same height at the breast beam and the back beam so the threads go straight through the heddles parallel to the floor. There are not many instructions that are helpful for my Toika. Much more info on the Glimakra due to Joan Hall's book on the Glimakra. So I learned slowly about my toika mostly with the help of Ravelry.