I just recently went
through several
reviews on the Magma and the over all impression I have from them is that the Magma is more a flavor atty than for cloud chasing. Builds at .6 to 1.2 should work better for it, or else drill out the air holes a little.
I wound up going with the Veritas as it was reported to be more leak resistant than the Magma, and I'm up to 1.3 ohms with it. 7 wraps on 1.6mm screwdriver, 28 ga. Flavor is almost too intense at tight airflow settings but I can always open it up a little to smooth it out a little.
If you have any 29 or 30 gauge, I'd suggest trying around .8 ohm, 1.6 to 2.0 mm diameter.
Someone that actually owns one may be able to give you some better advice, but if you want to stick to .2 ohms, I'm thinking you'll need to drill that sucker lol.
Good luck and keep us posted.