A40 Conversion Kit for full cradle GKJr Gimbal head, Vertical Rail, Screw, Cradle Clamp

KJr is a fun lightweight gimbal that can handle big lens. It is fun to use a larger lens and still have the agility for fast action without the effort of free holding the equipment. I am currently using a Sony 400 to 800 telephoto (5.5 lbs) and finds it handles this lens well for bird in flight and general bird photography.
The team at PMG is great and Mike answered all my questions to help me feel confident in my order and the capabilities of the product. The KJr is so much more stable than my current set up and I am sure it will handle a future 600 mm prime.

Got this along with the GKJRC Katana Pro gimbal, with side-mount clamp. However, I couldn't find instructions on how to swap the side-mount clamp for the cradle clamp. There wasn't an obvious next step after removing the main screw. Eventually I got brave, forcefully prying the side-mount off the spindle. It was the unobvious, awkward move that did the trick. Otherwise a fantastic experience. These products are incredibly well made.