Did a "incoming QC" inspection on the 4 fuel quantity level senders; all four are old style Stewart Warner 385 AB models made in 2018 and 2021. Metered each sender, and confirmed the range is from 31 ohms to 247 ohms. And did the service bulletin on these senders to insure the bend in the arm and the gap with the internal plastic body is sufficient. Then installed one in the left aux tank before running out of time. Will get to right tank tomorrow, with an open question still about using an adaptor for the two main tanks. Originally the Glastar had a mechanical gauge readout only in the wing root.