not sure, I haven't seen mine in 10yrs, it's in a box out in the garage. If you are fabricating your own, why use the stock rod? The two issues with the stock linkage were the actual tolerance of the ball joints degrading, and more commonly the jam nut on the stock rod would back out, and the rod threads would ultimately get stripped. I would just fab up a simple rod with heim joints on the end. You can manipulate the leverage at each end to achieve your desired amount of shifter travel. Simple hand tools is all it would take.
Ok. Didn't realize the rod is a weak point as well. Sounds like Triumphs decision to use a linkage was about as poorly executed as it could be.
Ok. It's not that the Rizoma gear actuator is allowing it to be mounted up side down without spring interference, it's that you or someone took off the side stand spring just like I did recently. What was done in it's place so the side stand stays up?