Yeah, when you want them to last longer they don't and when you don't, they do!
Built the rdta. I like it. It wants 2.5 mm coils IMHO. The bar fits perfectly across the deck. Easy to build, easy to wick. Airflow is a perfect rdl fully open. My only mistake was forgetting I only had 40w to play with.
Not sure what wire I used, just happened to find a 3 inch strand of something that looked nice. Probably 2x26/40. Did 6 wraps, should've done 5 but 6 spaced just fitted so nicely. 0.35ohms. Battery isn't impressed.
prolly do a simple clapton next time 26/40 5 wraps.
I really like it tho.