I think that the rdta was probably the offending item. It was good. I've so bloody many different tanks and rda 's I've lost count.I love the Vapefly Galaxies even the RDA is good.
you can still buy them direct from wismec bud. Think they are on sale for £42 currently. Wismec keep pretty good old stock in their shop. I've a dual 18650 squonk mod they made years back that I still maintain is the best big regulated squonker about.This may seem an odd one as my choice is a cheap Chinese mod, the Noisy Cricket 2-25.
Its the fact it can run in 4.2V, 8.4V bypass or in Variable Voltage with the potentiometer dial with basic safeties. I have mods that can do either but the NC2 is the only one I have that can do all three and, as I'm not much of a squonker or TC vaper is the only mod I own that caters for every type of vaping I regularly use.