Stevo,

You are still calling the new GP, "series" plugs. They are PARALLEL GP.

I made the adapters myself. I used the 18mm loop style plugs, bored them out and tapped 12mm threads in them. Hardest part was removing the porceline, that stuff is hard and tough. Even carbide tooling had a hard time cutting it. Steel tools won't touch it.

P E H