Thanks Mike...It sounds/looks like you were right on. I recall finding the balance point between the big end and the small end and marked this on the rods. This became the index distance between the pivot point of both ends when weighing the ends. This changed when I ground off some so I re-indexed that center point each time until I got what I wanted. I have to say that "blueprinting" an engine is one of the more interesting and exciting parts of engine technology. It doesn't cost much to do except time and produces significant results too !......Good on you Mike !.......Bruce