OK, the glow plug tip in cylinder #1 was broken off inside the pre chamber. I ordered the tools from Mercedes Source. They came very quickly as usual. The tools he sells made it very easy to pull the pre chamber. It would be impossible without these tools. MAKE SURE THE GLOW PLUG TIP IS NOT IN THE WAY WHEN PULLING THE CHAMBER.

I pushed the glow plug tip all the way inside before pulling the chamber and put everything back together. There is no way a vacuum or magnetic puller would have gotten it out. The pre chamber NEEDED to come out.

But, I still have the problem of not starting. Maybe I'll adjust the valves next. It has been over 20k miles since the last valve adjust.