When it comes to my new modfather RDA I will say this...so far I've owned it for 1 day and It's been one disappointing build after the other. Before I inform you of my builds they were all done with a 17.4v battery in a lipo box mod at 50%. I always used my e-cig at 30% with my parallel RDA'S. The builds I used with the modfather needed my mod set at 50% to get the coils hot enough to create vapor quickly. First build I tried was a dual 20gauge wrapped 8 times around a 4mm jig at .8ohms and only got 2-3 puffs before the RDA got so hot it wouldn't give anymore puffs. That was scary for a minute as I thought I broke my mod because it no longer hit. Until I put a .5ohm parallel RDA on it and it was back to normal. Next were .25ohm aliens that I thought had a lot of promise/potential that SHOULD have gone to .5ohms, but instead went to .76ohms. They, performed alot like the 20gauge 8 wraps around the 4mm jig because they only gave 2-3 puffs before becoming too hot and were no longer hitting. I have, TEMPORARILY, given up on this RDA. Can anyone PLEASE help me with a build that will perform better than my 20+(at least) standard/parallel RDA'S that are all built to .5ohms. Because all my RDA'S are at .5ohms does that mean my modfather RDA should come in at .5ohms. I don't care what the ohms are, I just want my new modfather RDA to hit "like a freight-train" would it perform better at a different ohm? I find that a .5ohm build works better than any other ohm build with my 2 lipo boxes. I primarily use 4s 1800mah 65-130c 17.4v batteries. p.s. I have to keep my ohms from .45-.5 and up with my lipo mod to be safe. thanks to all who can help, Jeffrey