After Chad and Davids leak check results from the containment box it was decided to perform a leak check on the feed through stem in the service cap. This is a known point of failure on TM1 and the same design flaw is likely in TM4. Once the service cap was open a visual inspection was performed and some oxidization of the copper line on the tube heater (+) circuit was observed (see attached pictures). The leak check was performed with the cart at a base pressure of 0.0 x 10^-4 Torr and base leak rate of 0.0 10 x 10^-9 atm cc/sec. A total of 4 joints were checked and no response was found. The service cap was then flooded with helium and once again no response was found. It was decided to give the module a clean bill of health, make note of the baseline test from the conditioning station, and continue to monitor the circuit.