Some of you might know I've been rewinding Accutron 214 coils for a while, but today I had my first success rewinding an ESA9162 T coil and it is running. These use much finer wire than the 214 coils. The winning formula is: sense coil 1260 turns giving 1.68kohm; drive coil 5040 turns giving 7.48kohm. I'm winding at about 0.17 cN tension (vs 0.34 for the Accutrons). Run current is about 8uA. Yes that's 6300 turns of wire! If any of you know where I could find a pile of duds please let me know!