All I can say is be real careful. I thought I was careful and I broke my screen anyway.

And make sure to test and re-test each modification you make to the detector at every stage. There was a point where I made multiple mods in one fell swoop (button extensions and power-plug removal) at the same time I broke the display. So I can't be certain which of my things caused the unit to quit POSTing properly when the display is powered.

Oh, and another piece of advice. Don't use hot-melt glue for anything in the assembly. My initial attempts at mounting the buttons used hot-melt glue. After the first summer day it spent in the parking lot, all the glue had melted and run away. I re-did it with actual RTV silicone and now all is well.