I'm well aware of the issues surrounding WD-40. I believe them mostly to be theory and speculation though, because at one point in time when I was a noob, I used WD-40 in one of my old JG's, but there were no ill effects that I noticed after a year. I never opened up the gearbox though.
Again, my question is should I, or should I not use my silicone lube on my gun? It's currently sporting a Prometheus tightbore, G&P clear rubber, and an SCS.