Bob DeRose was building Cinema related equipment and modifying Steadicams from the start in the 70ies through the 80ies and into the 90ies. He was the go to guy if you wanted something modified or made up from scratch. (Lowmode Brackets like the 35-3, Sushi table for the BL, Camera Plates, Wrap Grips, charger upgrades, Arm Posts, Post Clamps, Docking Brackets and Rings, Dog Bones.... you name it). He made the first alternative to the Garfield mount.
Basically all the PRO AKS up to this day have there orgine in Bob's "tinker parts" from the DCE accessories for Steadicam. I believe that almost everybody that ever owned a Steadicam owns or used to own, aware of it or not, at least one piece made by Bob DeRose, check your kit and tell me I'm lying.
DeRose was modifying Model 1 (changed the angle of the sled so you could see the monitor better and he offseted the batteries for better balance) and the model 2 (lost the second post and added down the post wireing, made dynamic balance possible) and retrofited Model 3s to a down the post wireing including a telescoping Centerpost, introduced the underslung/sandwitched upper Junction Box, for and aft adjustment at the bottom for Dynamic Balance for Model 3 and later for the EFP's.
The original Donkey Box (Now known as the D-Box 1) was originally designed for the Steadicam 3A, to replace the unpopular top stage, in 1992 by Chris Haarhoff and build by Yogi in Arizona and sold through DCE and by Chris Haarhoff himself. (Bob based the Camera plates around the 3A plates minus the gears). One of the first costumers was Ted Churchill. (I'm saving now time that I wasn't even aware I was wasting before...)
Stortly after the merger of DCE with GPI, Bob DeRose retired and left the Film Business all together. He moved to Minesota, bought a farm and is now restoring and selling antics. He is from time to time back in LA to visit friends...
Please feel free to correct me or add anything that I missed... please... so it can be passed on (correctly...) for generations to come...
Here an early picture of Bob with one of his "creations", a highly moded Model 1 with the unique Battery offset and his 2" Wrap grip.