i taped up the main body of the sensor, then used a dial caliper to measure the sides (and make sure you're on the sides and not the top or bottom)
i ended up with 0.170"
i measured both sides and they were within a couple thousandths of eachother so i left it at that and continuted,
we don't have any electricity, let alone power tools up here in oregon, so i did this with something we have a lot of, a chainsaw file, hell we even have our own brand of 'em
i do recommend using and angle head or a good quality die grinder,
you want to move the sensors to the left when they are on the bike, so if you need to hold it up before you start cutting, then do so, otherwise you've made twice the work
(or you can leave it and air brush a "Retarded" theme on your bike)
i decided to stop when i had taken about 70 thousandths of meat out of the holes, leaving them at 0.100" or 1/10th of an inch
this is not gospel, the gap between the sensors and the wheel is far more important than this is,
i think the tape did a pretty good job, but not as much as i was hoping, i didn't plan on the shavings sticking to the actual part i was filing on.
it did help i'm sure but it wasn't clean enough untill i sprayed them down with carb cleaner and rapped them a couple times against the frame of the bike, this will help get most of the remaining shavings off.
when re routing the wires and replacing the sensors, take care that the wires will not hit any of the moving parts
this step is not mandatory but its a good idea anytime you have moving parts close by,
make sure your bolt holes are clean of oil and such, spray the brake cleaner in them,
also spray the bolt threads off to clean them,
apply a drop of loc-tite to each of the bolts and thread them in,
don't loc tite all of the bolts at once, only do the two that you are working with per sensor.
you don't want it to get half way set up while you're still turning the bolts.
use your feeler gauge or whatever measuring tool you used during disassembly and set the gap for the sensor,
then whilst retaining the proper gap you need to push the sensor as far as the holes will allow , to the left.
if you're not very dexterious you may need to use your feet as well, to hold everything in place.
now your'e ready to clean the gasket surfaces, you can pretty much follow goatcheesesox instructions from here on out