Good day to you,
My name is Ahuva , I'm a Soldier from Israel, I picked interest on you after going through your short profile and deemed it necessary to write you immediately.I have something very vital to disclose to you, but I found it difficult to express myself here, since it's a public site.Could you please get back to me on (ahuva_01@aol.com) for more details.
Have a nice day.

Will, 

Jack Vilas did when he was in business. He sourced all the parts in case Miller, Desco, and DSI didn't have them, There were several times that DSI quit making parts for hats like the KMB 7 (both sticky out dial a breath) and the 10, that were extensively used in applications like hull cleaning, penetration, etc. He would contact the manufacturers directly for technical specs of the part, as the insurance thing was becoming a big deal in the mid 90s. Jack was a spec geek as well. He had a shop that repaired and inspected helmets when companies like Torch, AOD and Cal Dive made the little annual sticker mandatory. I know for a fact that he used to torque all the bolts on the helmet, and even made Ben Miller spit out some torque specs instead of hand tight. Helmets aren't made as well as they were in the 80s or 90s, with companies like DSI outsourcing to someplace to pay pennies on the dollar and putting it in their labeled bag. If you compare quality of an old SL 17 to one of the newer ones, you can find the fiberglass isn't as tightly meshed or dense (go borrow D. Gilberts 002) and compare. The quality isn't important, but then again the work isn't there, so demand isn't high enough to turn a profit with quality anymore.