Confirmed leak as per previous Elog.

Tightened to 100 Nm - no effects.

Tightened to 130 Nm - bottom leak disappeared. Top leak still at 1.3E-8 mbar l second.

Decided to open. Lifted front part of CARME down. 

No obvious damage to wire seal.

Inspected wire seat and seal part. Part corresponding to leak feels rough to the touch. Suggested damage when SS parts come together? 

DR sanded down gently the valve seal. Cleaned with compressed air and ethanol. 

Gently sanded down seat as well, barely touched it.

Grossmontage experts will be back tomorrow am for final cleaning and re-assembly.