Thank you very much! It was hard work, but it was also fun and I learned a lot by just going for it. I got all my tanks topped off today and I'm ready to get cracking on some more projects on my next break. I think the next project will be a removeable rack for the bed of the truck so I can transport the welding tanks in a safe manner. Up until now, I've been sliding them in the back seat and putting a seat belt around them. Not exactly the safest thing in the world with a full tank at 2000psi. Probably more uni-strut will get used. I'll make it to where it slides in the stake pockets and can hold the tanks strapped in the upright position like they should be transported. I'll have to fabricate the straps out of flatbar and make them like conduit straps so they can hook into the strut. When removed from the truck, I'll make it free-standing so it can do double duty by holding emptys in the garage. Should be a pretty good little project.