I think we need to go back to the beginning and look at the exact procedure of everything involved with this mainspring plus any additional lubrication you're putting in the mainspring barrel? Something is not right when the laws of the universe seem to be going backwards for us
My experience with the other breaking greases were more was worse. This is what makes the Kluber Different it's really really sticky and more is more sticky. Except for this watch where it's not? But that I also question sanding the inside of the barrel your changing the characteristics. Email auto watches the inside of the barrel has cuts to reduce the contact area to make it easier for the mainspring to slip this is why this is such a weird example here lots of surface area should have lots of stickiness and we don't
Looks like a interesting video, do you have the link to it saved?
Have you looked if the part nr 4 isn't actually 2 pieces?
The lower which is in contact with the winding pinion might have a upper removable part called a crown wheel core.
I think it used to be called no 423 in other Patek movements. The core usually fitts on the upside the lower crown wheel. It has a bronze bushing fitted to it when the bridge goes into place.
If you look closely at the lower picture you can see it most likely is a two piece part.
Push in the middle of the wheel with some appropiate tool to see if it doesn't split appart.
Yes, those Esembl-O-Graf booklets/DVD, etc. would be very handy indeed. I remember seeing them being sold at NAWCC marts. But since I was only interested in pocket watches at the time, I never snagged any. I do remember a friend buying a bunch of them. Good thought. I had forgotten about them.