Howdy, welcome to the fun, glad you're enjoying your Air....it's an easy thing to do all right.
Stop with the Soy milk!!! It will not work. You need real
whole milk. Forget skim, low fat and so on. You need butter fat to absorb the THC so you can digest it rather than pooping it out again. A shot or two of cream (or 'half and half') added will be even better. Soy milk won't work. Might as well use water. I just rinse it with water and dry. Any deposits still left on the glass are simply the basis for the next deposits. If you want it clean you'll need detergent or solvent (like ISO). Water only rinses the milk off.
Stick with the factory batteries. Seriously. They've been seriously researched by our very own
@CentiZen who is an excellent source of the real deal (when he has them, I think currently he's out?), he buys them in bulk from the maker and gives 'good guy discounts' to us. I have piles of high performance 18650s about from other projects but I bought my two spares for Air from PIU. You save at most a few bucks. Why chance it?
Using
SOY milk???
OF