It takes a manufacturer to charge £56 plus vat for what I thought was a bolt to re-think my earlier design, as it turned out the £56 included the pan handle star bush which I didn’t need.
Here is the re-devised design which is altogether a lot more simple and does not involve any drilling.
Firstly you must move the tripod balancing plate tightening screw out of the way, (fig 1) this can be done with a smaller Philips screw driver as shown above.
Secondly reverse the pan handle (fig 2) as shown.
Lastly there are 2 small bolts on the back of the Sony remote (fig 3) un-tighten them and slide out as far as it goes, re-tighten. Then rest the Sony remote on top of the Miller assembly as shown.
This version is far simpler and works a treat giving you your robust pan handle and the remote hand grip for start/stop, servo zoom and menu options.