Hi There, I recently bought a DNA 250c, Unfortunately from the first use of the mod I have been experiencing throttling/instability using any of my atomizers. Here are two screen shots, one of my older DNA250 and of the new DNA250c. Both using the same RTA. Not using any punch or pre heat, it seems quite unstable compared to my old 250 using same settings and conditions. This is my 3rd DNA in three years and the other two were stable out of the box. 250: 250c: What do you guys think?