So far my biggest gripe with the xmax is the factory spool holder is mounted to the back.
Its a bitch to get at, change, and you can't keep an eye on your filament level...
Overall a stupid oversight.
But so far its been pretty easy to swap it to feeding out of one of my dry boxes.
I added a center fitting to run a bowden tube directly into the box. Mainly because I plan on running one XL spool of ASA in there.