As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOW PRESSURE READING ON GAUGE. LEAK AROUND PRESSURE GAUGE THREADS. REMOVED PRESSURE GAUGE AND FOUND STRIPPED THREADS ON GAUGE AND GAUGE ADAPTOR. REPLACED GAUGE AND ADAPTOR, RECHECKED FOR LEAKS. CHECKS OK. TECHNICIAN LEFT AND NEW TECHNICIAN HAS BEEN GIVEN TRAINING ON THE PROPER INSERTION AND THREADING OF GAUGE INTO VALVE THREADS.