Update
I got a message from Mr. Shull this morning, apologizing for the delay. He states that the cylinders he uses have been on back-order for weeks, and that they should be arriving early next week. He stated that I should have contacted HIM before I "slammed" him on the net. He also stated he would contact me on Monday to let me know "where we are". :roll:
:!: I sent a reply reminding him that I provided him 4 alternate ways to contact me, besides thru RJ, and that I thought that it would be prudent of him to let ME know if there was a problem, even if (or especially if) it's beyond his control, (back-ordered) especially since it's been over a month since I heard anything from him.
:arrow: I told him that I would add a post here saying that he made things right, when and if he does.