Ok,
Grainger doesn't carry it any longer.
True value does but you have to order it to the store, takes several days and the closest is 20mi.
Found it at a local aircraft supplies house. Its the better quaility they tell me.
I have now applied it to all 90 modules. Rain is coming over the next few days. A good acid test.
I did find out that CorrosionX never dries completely, interesting.
Found and test someting called ZincX that supposedly does the same thing but it has a slight grey tinge to it but dosen't seem to bother the leds too much. I would probably mask the emitter area if I was to go with that in the future.