I like seeing those pix since those are the same two mods I've upgraded to for my Splinters. But damn, have you tried the DNA ecigprofile for the Z? I was just using my og Splinter on the bronze mod tonight and, while your pictured setup with the smaller vape on the bigger mod looks and handles best, both vapes perform better for me with the DNA. Makes me want to get a smaller dna or find better settings for the rxg3d. So far the takeaway is just that the DNA works better. I should at least check to make sure there's a profile for the 75c. And yeah, I have no idea what those ecigprofiles profiles do. But I like it.