I took my new AFS2 apart, washed it out, then put it back together following the steps on the GG site.
The instructions are great, I only went astray once when I tried to put the larger of the two similarly sized o-rings on the atomiser, it is the slightly smaller one that you slide down to the base of the atomiser. My fault for not keeping track of which part goes where.
I put 100 drops in the AFS for my first test (barely starting to fill it), and after a few instances of liquid in my mouth it settled down and hasn't done it since.
I seem to be getting more vapour than I did with just a plain cart, and every use is a strong hit now, unlike a cart where it diminishes quickly as the wool dries out. It is working just as I hoped it would. Thanks to Lisa for the fast postage, no more messing with wet carts and scrunched-up wool for me at home now!