I went from Jesters to FKS180s...
The toepiece fitted damn near into the exact same holes, or at least 2 of the screws did. No issues there.
And the heel was miles in front of the Jester track. I had both mounted at center with the same boot and it was all gravy. I'll have a look at the skis when I get home tonight as they have no bindings on them now so the holes are pretty obvious.
Double post, but I just printed off paper templates for FKS and Jester and the rear 2 holes of the toepiece are absolutely identical, the front 2 on the FKS are wider and further forward, the spacing is 12mm from the hole centres which is OK.
The heelpiece is miles in front of the Jester track so no issues there.