My CD I puked. Instead of spending a lot of money in the hope it might be fixable (30 year old electronics) I bit the bullet and bought a new CD IV (no new shoes for me for quite a while). I'm having trouble getting it adjusted and working. AVL told me to loosen the springs, which I did, and I thought fixed it. All of the shafts seemed to be rising OK. When I started to weave, #5 was not coming up. I repeated the adjustment procedure, and now I have several shafts that may or may not come up. AVL told me to look at whether the beads were misshapen or the slots rounded; this all looks fine.I was looking for information on how tight the springs should be, since that seems to be a factor, but can't find anything. Is there anyone out there who has installed a CD IV on an older loom who can shed some light on this? CD I worked just beautifully until it puked.