[Cody Carey]

And as I said, There is nothing on ebay that suits my quantity, size, and price restraints at the moment... Which is the reason I came to this community in hopes of finding another source for cylinders.

I've made a few rough prototype cylinders both out of PVC, and a screen door shock. While both work acceptably at lower PSI, they lack any type of regularity. It's a home done process, and while I can make them close to Identical, each one has surprisingly different specs.

I understand that you are trying to advise me to check out other options, but I've done so already.