I have one of the brass limited edition RSM tips
I just got mine the other day... All my other tips are going away now

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I've drilled my Hornet RA to 2mm the Brass CapItAll for my IGO-S came with a 1.5mm. I need to torch my stainless Rocket tip to match the Hornet... might do that tomorrow. I'm just doing the ribbed bottom, hopefully just to a bronze color (not looking for purple/blue).
I also broke out of my norm... I placed an order for a few bottles of juice from http://www.virginvapor.com/
Hummingbird Fuel, a custom mixed Cinnamon with a hint of vanilla, then a 3 bottle sampler with some Coconut, Fig, and Vanilla Latte.
. And cinnamon really plays havoc on polycarb tanks.