Right, the leg height can't be shorter than the switch height. The screws seem long enough to make corrections by adding washers if you have a cut some of them too short. Now on to the case fit...dooop
Make sure that step number ONE of the entire build is to check the fit of the heatsink. I bought some cheapo $5.99 Chicago brand lights from Harbor Freight. The heatsinks needed a little "persuasion" on the vise to ensure I had enough clearance for the LED lens. This is MUCH easier if you have not already gotten anxious, soldered it all up and attached the PCB.
Also, my cases may have more of a taper than RJs reference model, so I will move the template just a hair to the left before drilling. This will make sure that the edge of the PCB is not perfectly even with the side of the heatsink, allowing it to fit within the taper of the case and not contact the case before the heatsink.
Here are some more pics.
1 - heatsink won't go in deep enough
2 - a little persuasion
3 - gonna shift the others left a bit
4 - done..note a bit of filing on the right side of heatsink to get it level