Here's a simple, inexpensive aircraft theft deterent, that fits virtually all push-pull throttle and mixture controls. The device will accept shafts up to .375" diameter, is made of heavy-gauge cadmium plated steel, and uses a simple padlock (not included).
Used 7 on heavily oxidized Airstream. Sanded off oxidation. Presto changeo, an almost mirror-like finish. Will stick with Nuvite. Important to follow instructional video.
This is an amazing aid to my fisning. Something serious inland fishermen should have. My only regret is that I didn't have this over the last 20 years.