I canít visualize what youíre doing with the night crawler program etc. Hereís a YouTube playlist with two videos that should clarify things. No matter what, you read the PA off the FOVI. This is for east or west of the meridian. The PA is the PA independent of mount geometry. After viewing these, if youíre still confused we can set up a phone call next week (on the freeway now with Stevie driving).