I had trouble with the motor not developing HP after 40 MPH. Got a recommendation to clean the metering valve in the IP. Went pretty well. I took pictures and even marked the position of the face cam on throttle shaft for replacement. Unfortunately the yard marker ink was floated away by the diesel. I've read all the GM/service/TM and forums and cannot find any help in putting the face cam at the correct position on the shaft. I have the J-Tool, but it only helps if you use it during removal. Any advice where to start?