Is it possible to get the spec sheets on some tubes I purchased from L3? They're 18um filmless non-contract but the retailer I purchased them from isn't responding and I unfortunately don't have the accurate spec sheets because I sent them in for warranty and the tubes were replaced. Everything I've heard is that resale value on any unit without them is severely degraded so I'd love to get my hands on a copy if possible. I sent L3 an email this morning but then I realized they may not even give that information out and I've seen conflicting reports online.