I have the same Problem i found Wheels like hell but no Acid, i was able to gather 5 Acid Bottles, but it sems more to do with the Loot Stage isnt working Properly when i loot on Forest Biomes (easiest)) i have lootstage 90+ there i find steel tools Stacks over stacks of ammo, i have literally 4 crates full with ammo from Shotgun,7.62,9mm didnt had to bother to craft any, but when i go into the wasteland i have lootstage 258 and there is the loot really worthless, as example with lootstage 258 in wasteland i find in a military base in the leather crate 70 iron crossbow bolts and 1 medkit, if i go to the desert or starting biome i get steel,ammo,armor,schematics. but acid is like disappeard from it and some of the new vehicle mods and drone mods are still not found, for the drone i only found the light mod, nothing else on lootstage 90+ for the vehicle mods i found reserve tank, extra seat,supercharger.
And their try to make the Wasteland harder is in my opinion not working, the only thing it did it makes it annoying as hell, you will get flooded with zombies literally tried to dig up a treasure chest (not a quest, it was from a treasure map) first there were arround 10-20 zombies i killed them and then all of a sudden 80 zombies without delay respawning, it isnt harder its just more annoying considering you cant enter that biome at early stage now, and its flooded with steel bars so when you have to cross a part of the wasteland you got 10 vultures behind you and 30 zombies.
i even found a bug with the new restore power quest, my first one on tier 2 trader quest was in the Wasteland, and literally there were infinite amount of zombie respawns, first try i had to run, thought pipe guns would be enough but got close away with the bicycle, then i waited got to other trader did the same quest but in other biomes there was just a normal zombie amount arround the area until i started the quest marker, so when i got tier 6 guns i went back and thought i give it another try..... 300 shotgun shells, 600 9mm and 600 7.62 all gone through and still they kept on respawning like hell, and note i didnt even touched the quest marker to start it there, it flodded the game with so many respawns that the game started to stutter like hell, i had to run in activate the marker and drive away on the motorcycle so it can fail. I get it to make it a bit more harder but that is just ridiculous, i hope they fix that on the full release, because for me now at least i wont enter the wasteland until that respawn is limited and not endless. Both other tries on restore power on the other biomes no problem a bigger zombie mass came but you had a chance to do it.
the RWG maps are really awesome even the new buildings, but on my new RWG 10k map i only got 1 factory and its a sham factory no shotgun messiah one (looked with world editor the POI list through, i got some smaller gun stores and 2 shooting ranges but thats it.
i hope on full alpha 20 release it gets fixed, but besides that i really enjoy the new alpha 20