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In the event anybody wants to know the outcome of what I figured out...........

The brand new tube was in fact bad but it wasnt due to the coating itself. I think that something internally is...

Checked that. Nothing I can see indicates there is any type of covering on the lens that can be removed.

I picked at the edge of the lens trying to find a film that may be covering it, but nothing...

Here is a picture of the burn pattern it produces when the laser is pulsed quickly.
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So I havent had time to work on this much since my post but today I did.

Upon much closer inspection and playing with lights it appears to be a coating like found on some some lenses as it is...

We have never run this tube once, except for a few pulses to setup alignment.

We did clean lens to see if it was in fact build up or something from the factory, but nothing comes off with...

Well thats what I thought at first so I carefully inspected the sides of the mirror and very gently picked at the sides with my nail to see if there was a film or cap that might peel off but............

So..... I bought a 100W machine with RECI tube a year ago. Works great, fires great etc etc

Bought a second 100W machine this year with a spare RECI tube as well. I verified with RECI site that...