Just picked up a Century 10A camera and Centennial 1A stand. Both pieces are beautiful examples of engineering and construction from the early 20th century.

I have a couple questions for people who have experience with these pieces:

Does anyone know how to adjust the tension on the coiled spring that acts as a counterweight for the platform/camera?

Is there any way to adjust the mechanism that is supposed to lock the pinion on the height control of the stand? Mine tends to slip when the platform is at its greatest height. Perhaps adjusting the counterweight spring tension will solve this.

What length of replacement bellows have people used? There's quite a bit of extension available on the 10A. The bellows on mine were completely shot, so it's hard to estimate the extension on the original.

Thanks in advance.

Daniel