I just wanted to provide an update for folks.
After I got the little Luger I took it to the range and had multiple FTEs and was very disappointed with the pistols' performance.
I disassembled the toggle and I discovered that I had a badly chipped extractor. I got in contact with ithacartist, and he was immensely helpful. He sent me a high quality repo extractor kit along with detailed install instructions. The install went fine. Without the detail info I would have surely struggled with the work. I took the gun back to the range and blasted off 50 rounds of WWB with near flawless results.
OK, I had one FTE. Hey, I'll take 49/50 on a non CCW, C&R vintage pistol all day.
I later got a spare mag and a beautiful set of wooden "German P.08 little junior" grips from him. Those brown plastic oem jobs looked way too toy like to me. Attached is a photo of the unfinished grips. I applied two coats of BLO and they look great.
I am a happy ERMA owner now.
If anyone needs ERMA advice David is the guy to contact. ithacartist, is the ERMA man!