I just went and double checked the RBAs I have and used prior to getting RM2s. All listed fed juice and air from bottom without issues. They include A7, Mini A7, Surface, Killer, macARB, eBaron Spiral. I can't lay my hand on the Vision Eternity but it fed air and juice well as long as it wasn't squeezed into a Woodvil brass catchcup too tightly. If I am recalling correctly I think the VE did fit into Original Mini well but the atty is almost as tall as the Mini and looks pretty ridiculous to my eye.
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