We have just published Sansui TU-717/517 mods on Jim and Bob's DIY page here... http://www.fmtunerinfo.com/DIY.html#TU-717 I've made at least a couple of errors and Eric is working on them. Hope these are of some help to fellow DIY'ers. If anyone finds errors or wants to contribute more, please email Eric, Bob or me. 8🙂 jim...