I just reviewed a copy of Volume 1 TH400 TECHNICAL SERVICE MANUAL /THEORY OF OPERATION,DIAGNOSIS AND TESTING, AND TECHNICAL RESOURCES. We are in print,books should be here this Friday and ready to ship, Volume 2 is complete and will be printed following the release of volume 1. Email me if your interested in further details. Volume 1 is 216 pages of getting to know the trans and how it works,volume 2 is rebuild and upgrades.