I recently came across a post on this forum from Shane in Washington on the upper shaft modification to run his coil cable wire inside the shaft to his X-1 probe and I like it very much. Everyones concern is changing coils in the field, Here's my solution. If the wire coming out of the coil had the option to order it with a shorter wire to just reach the top of the lower shaft and SunRay offered a connecting cable from the box down to the lower shaft so you make the connection there ,like male and female connector you could change coils at the lower shaft and leave wires inside the shaft .All it would amount to is male -female connectors at the lower shaft. Maybe I need to call the cable guy for a splice job.