its not that hard to do a decent job mounting bindings without a jig... just be careful with your measurements. Fill in the old holes with JB weld if you can(it works very well) Get the bindings set up how you want them, and ligned up as straight as you can get them by eyeballing it, use a sharpie or some marker to put a dot where you need the holes. Then Take teh right size drill bit(smaller than the screws), wrap masking tape around the drill bit, leaving the desired depth of the hole showing in the drill bit. This gives you a consistent depth. Then you just put a bit of epoxy in the holes and on the screws, screw the bindings to the skis, and let them dry. IF you take your time with this, you should be able to do a pretty decent job... measure twice, cut once