If you have or a friend has a 3D printer a tool could likely be made with it. It seems the tool would need to have an opening that fit rather snogly on the top of the bottle with a slight tapered throat above that with the bottom of the throat barely smaller than the bottle opening. Then a ram that ends very slightly above the top of the bottle. Then just use either hand pressure or a rubber or dead blow mallet to seat the cork.
How small of a corkscrew can be gotten? They will be needed for opening the bottles.
Or maybe there is a synthetic cork with a large head to pull the cork when needed.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.