The problem I have discovered when fitting an aftermarket bridge is that the Tele kit bridges have much longer adjustment screws so the saddles sit much further forward on the bridge plate, Wilkinson six saddle strung through bridges are worse in this respect.
As for the cavity enlargement, when I did my first Tele I used humbuckers and it was routed for standard pickups.
Being a tight ar5e and not wanting to buy a router I used an Ozito multitool from the Green Shed, I used the narrow blade probably about 10mm from memory and just cut straight down vertically clearing the dust from the cut often.
Simply taped up the areas to be cut out, drew the new cavity shapes on the tape and went around the perimeter with the multitool to the required depth and then chiselled it out with a fine very sharp chisel and then cleaned up using the Dremel with a sanding drum.
I also had to make a small infill for the bridge pickup from pine which is barely visible once everything is mounted up.
I will be doing the same with the Tuff Dog because of the bridge placement issue.
Last edited by dave.king1; 07-03-2017 at 05:33 AM.