UPDATE: two days and started to get a weird taste...noticed juice was darkening...cotton was pitch black! lol I mean...BLACK. Then I put new cotton after thorough clean and all gurgle...took apart, lost a lot of juice, tried again...cotton was too thin this time...so might get a day from this build. Issue I have is fear of breaking the coil with tight cotton pulling through coil...how tight and cotton pulls apart...it is the pulling the correct thickness from the large cotton supply. that is my challenge...and if i can join two slices of cotton to add for greater thickness...all part of learning curve you vets are laughing at or bored with! But...thanks for the support...feel less alone here!
To be honest, as others have said, it sounds like the juice you’re using is the biggest issue you’re having. It’s most likely loaded with sweeteners like Sucralose. That stuff will destroy your coils/wick. When I buy juice now, I pay attention to the name, as that’s my rule of thumb - if it’s got chocolate in the name, or caramel, coffee, cake etc, I stay away from these. They’re typically dark juices that are also loaded with sweetener, which is horrendous for build longevity. Juice companies just throw in sweetener to A) make it cheaply and B) make it taste good without needing a complex recipe.
If you want to PM me, I can give you the names of a few companies I came across on Reddit a few years ago that makes juice affordably, with little to no sweeteners (they only use sweetener when it’s absolutely necessary, and you can request for it to be removed entirely). Around $15 for 120mls.
As far as the Zeus Dual wicking - that tank was a pain in the .... for me, and I’ve been rebuilding for over 5 years now. I felt like I could use one microstrand of cotton and I’d still get a dry hit. What I ended up doing was pulling my wick as tightly as I could thru the coil and then I thinner the hell out of the wick tails until they were almost transparent. That way the juice could get into the tails easily, but there was still a large reserve of cotton inside the coil for absorption.