Chris, first off, welcome to the forum! Second, I am no gunsmith, and am unfamilar with your gun. However, after that... What you are discribing sounds like a security screw. We use them in my job. They are designed specificly to prevent amatuers from getting into things. They require a special hex driver to install and remove. they are hardened, so do not attempt to drill out the center post. You will either brake your bit, get hurt, or damage your gun. You can purchace sucurity bits at some tool companies, and sometimes I have seen sets for sale at tool expos. But my recommendation would be to let the gunsmith do the swap for you, or at least talk with ine before attempting this. He might give you a hand, or simply remove the screw for you, and tighten it for you once you are done. Just my $.02 worth.
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.