Simon just finished modding his Yamaha RX-17 with the some tips from the Anode Records page. Even though his webpage is in Dutch, its not extremely hard to figure out what is going on. Most of the bends come from a single IC wired to a DB25 connector and patched through some stackable banana jacks on main console. Lots of great images and a very neat video that makes me want to go out and buy an RX-17 on eBay as well.