I think Jack Rowe's DVD is a great resource for those who want to maintain and repair their own doubles. The disc is well indexed with chapters on specific repairs. I fixed a poorly timed ejector on an AYA by following his instruction and I have very little experience with gun repair. I am also confident in stripping and cleaning my box locks and side locks after watching the video. Just watching his approach and technique in handling the firearms will answer many questions and prevent mistakes that might mar or damage your gun. I have purchased every book I can find on double repair and maintenance. The Jack Rowe DVD is the best resource I have come across to date.