“Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”
Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2
Have you checked here for the proper mounting plate> http://www.khbphotografix.com/omega/LensMountD5.htm
It should help you find what you need to correct the problem. If you need a newer style turret, contact me, I have an extra I can let go for a fair price or maybe even swap for something.