Try the piston mod.
YouTube - Amos Airsoft how to: AOE and the ARS MASK kit!
We've got the exact same compression set-ups in our G3 and I needed to remove the last tooth and 1/3 of the 2nd last one.
Other than that, when I get a chance I'll talk to you on MSN, I didn't really have time to read what you were writing before.