I got the tool from samstag in TN. Nice guy. I pulled the injector. Unscrewed the collar ring. Removed the glow plug. Pulled the prechamber with an old injector housing and a slide hammer. The prechamber had soot buildup and was not sealing properly. I cleaned and emory cloth buff to like new and applied a thin layer of Ultra Copper RTV. Hammered it back in. Applied rtv to the prechamber groove and reinstall a new threaded collar ring with neverseeze on the threads. Torqued to 105 lbs. New Injector and lines back together and fired it up. No leaks.

The old ring was not bad, the prechamber was not sealing properly for whatever reason. Cylinder #5 is now 100% and I noticed Cylinder #4 has a slightly melted heat shield. Looks like same problem as No. 5. I will wait till it leaks and fix it the same way.

Thanks for all the help and advice.