Hey
@Bubba... I have a Mutation X V4 myself and it was also my first RDA. So I guess I can safely assume you're coming from a sub ohm tank over to an RDA? (I know this could be a DUH question, but just making sure). I got into building myself with the Kanger Subtank Mini, then I moved over to a dedicated RTA (Orchid V7), then over to RDA's. RDA's helped me quit smoking completely as it gave, for me, the most cigarette like experience when taking a draw.
Remember the Ego-T tanks? You had to pick a top coil or bottom coil? If I were to compare RDA's and most tanks to those, I'd say an RDA is closer to a top coil tank... warmer, slightly harsher vapor depending on your pg/vg blend; and most of the tanks nowadays are basically comparable to those bottom coil tanks... smoother cooler vapor depending on pg/vg blend. So from an RDA, the hit, for me at least, has a bit more bite to it than a tank. I'm sure you were expecting that either way but just thought I'd throw it out there.
Next, try a thinner gauge of kanthal in your RDA. I use 26 gauge kanthal normally; I do have 24 gauge but I didn't like how the vapor was or the ramp up time. 24 gauge while it takes longer to ramp up will also get hotter as the coil can retain more heat. Some people like some don't, its not for me so 26 all the way in my world.
I build between .33 - .4 ohms normally. On 26g kanthal, thats about 5-6 wraps or so with a 2mm internal diameter (I have one of those coil master kits, but lately I've been hand wrapping the coils for a little bit of space between the wraps). So, I would change up the kanthal to 26 and see what that does for you. Also follow the advice here as far as test firing the coil and making sure they're warming up evenly and you have a glow from the center out.
I've only been building since January this year (started on RTA's now on RDA's), and the folks here at VU have been extremely helpful while I muddled through everything and figured things out.
Last thing, watch out with the screws on those Mutation X V4's... they can be kinda sharp at the ends, and may cut your wire when you tighten things down (Happens to me a lot on 26g). So don't tighten it down like the incredible hulk using brute force, tighten it down gently like the credible hulk who will attack your points with facts and documentation.
Again, I've only been building starting this year so take my advice for a grain of salt. It was the tons of information in these forums that helped me build consistently like I can today.