In re: half pack mods; PIU sells dry herb pods for the Flowermate V5.0S/Pro which can help.
Cleaning: Pipe cleaners from a cigar shop or online are good for cleaning underneath the flavor chamber.
They're not, the unit will have to be sent in to have the batteries replaced by Arizer for a fee.
*I would have liked to see the Solo 2 with removable batteries.
The stems helped a lot and made it easier on my throat compared to the original ones, when the Purple Haze arrives I'll make the comparison. If the originals work well then I'll keep the PVHES for the Air.