Try doing a 2mm coil. I was a 3mm + coil on everything until this Engine Nano. It just makes more flavor for some strange reason. Use something simple at first just to see what happens.
I just did a 2mm coil with the same 26/32 Clapton wire. It came out a little higher than I normally use. It is .7 ohm. If the first couple draws are any indication then yes the flavor does seem better than with the 3mm coil. I noticed when I first opened it up that one side of my coil in the 3mm looked a little dry so maybe I had too much wick in the hole and it wasn't letting it wick very well.