atty cleaning

I have had my Ego-T(ank) for about 3-4 weeks now. One of my attys isn't performing so great. The one that was working started flaking out last night, as well. I've cleaned both. The first one didn't get better with a vodka bath/blow out. The other is still drying. Anyway... I've noticed that...

Simple Effective Atomizer Cleaning The carbon build-up from burnt e-liquid (& flavours & other additives eventually cause a strong bad 'burnt' taste when vaping. So I far have tried various treatments: hot water, detergent, alcohol, powerful sonicating bath, coca-cola (weak acid)...