Sounds like you could use a second opinion.

Cracking the metal fuel lines and observing idle will help determine if an individual inj is causing a rough idle.

How are your motor mounts?

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)