Just a note to say that my 21 day, large skeleton clock is working fine at the moment. I had to take the pendulum bearings out and soak them again, but now it runs like a champ.
My only problem is that the clicks don't fit in the rachet very well (they seem to be too big) and it is quite hard to wind the clock. I printed them from the same clock file and am using the 10 day ratchet option. I now have three sets as I reprinted some more thinking they might be smaller.
I am very happy with how the clock runs and might do another one.
Thanks for posting and mentioning issues. That clock is an old design and maybe the clearances are not as great as the newer designs. I will open up the CAD and check it out when I get a chance.
It would be OK to print the clicks 5% smaller to get the clock working.