Well I gave a dual coil a try tonight and I have 2 tips.
1. Don't use your eGo battery to assemble the coils unless it is 5 clicked off, my thumb has a lovely zig zag on it now
2. Don't just go testing your creations out on your eGo battery all willy nilly, meter that thing FIRST. Just because it looks pretty that doesn't make it ideal LOL. Fried my second to last eGo battery
took the RA off and it metered at 1.0ohm 
I have a great double CE2 wick single running rock steady at 1.5ohm hitting like a truck on my last original eGo battery. I must ready more on these doubles before I try again...and get some better wick!
Ron -
1. Don't use your eGo battery to assemble the coils unless it is 5 clicked off, my thumb has a lovely zig zag on it now
2. Don't just go testing your creations out on your eGo battery all willy nilly, meter that thing FIRST. Just because it looks pretty that doesn't make it ideal LOL. Fried my second to last eGo battery

I have a great double CE2 wick single running rock steady at 1.5ohm hitting like a truck on my last original eGo battery. I must ready more on these doubles before I try again...and get some better wick!
Ron -