I had a makergear 2 for a few years, until the leveling became too much of an annoying issue and finally got rid of it.I have a Creality now, and after a few upgrades, have only created about 3 complete prints. leveling is easier, but adhesion seems to be a problem. ugh.I am now going to give Sonic Phrozen 4K a try. having never used a resin printer before, what should I know? for instance, can you just throw away the empty resin bottles in the trash, or do they need to be handled properly?thanks