'40 Ford window regulator repair-Update

[V8 Bob]

The handle crank shaft snapped on my coupe's left door regulator. I bought a commonly available repair kit , but it looks like the large main gear has to be removed to gain access installing the new cup rivets. I don't see any way to remove the gear other than grinding off the end of the spring stud on the back side of the main body. Problem is this replacement bolt/stud main assembly part is not included with the kit. I've searched for installing this repair kit without success, so I'm here hoping to find answers.
I have ordered a new set of complete regulators, but would still like to repair my original regulator. Thanks.
Bob