Same problem with original? I dont personally have an evic. Trying to help someone.
Edit: it's 23mm, so search for a 23mm RDA, and the Evic Supreme has more power than I realized.
Similar. The beauty ring on the original is rounded at the top so the only way to get a flush "look" would be to have an RDA which was shaped to continue the curve.
The supreme is straight wall to the top and I thought it was at or near 22mm. I deduce this based on my experience with the Evic which is 22mm until the goofy, curving beauty ring.
Couple points regarding your search for a RDA which will flush mount to the Evic Supreme: 1) it is an 510/ego fitting on the top, so you'd have to have an Ego at 22mm wide to flush mount. 2) You can probably simulate a flush mount with a 510 RDA that matches the width of the beauty ring. 3) Are you certain that the Supreme is the mod you want to drip with? You will be working with harshly limited power plus a harshly restricted resistance range for your coils.