Originally Posted by
bpeder
And the winner is... aggiegrads! My tripod tubes are all 1.75" OD and the spare crossbeam, (pre-drilled with .5" holes is 1.75" OD and sleeve fits inside the vertical tube in the tripod with a clamp stop. Kudos to Feedback for making the product and providing the needed specs! Thanks to all who posted.
It would be nice to see what you are working with.