Much Assembly Required

It’ll take a great deal of toil to put this together…

Across:

AFJ
AIK
AMR
CEA
CQX
CSNO
DKTM
EAL
EMMIE
ENN
EOA
IIO
ITONEM
KANVSR
KDV
KNA
LBS
MIR
MQP
NAW
NWDT
PNATDA
RBNW
REFO
RKWAPK
RMKTS
RRXMEE
RSO
SAI
SAOYRRWC
STAGA
SZSRC
TEEP
TEW
THI
TIUKNE
TJG
TNR
WAZ
????
????

Down:

AAS
AAWLJZQO
AINRS
AMNKN
AOHAQ
AW
CST
CTN
EKRT
ETS
GATEM
IOAWZ
JIAKRTTE
KNF
KV
MOA
NKNCE
NSN
NWO
OESP
OPDT
PWMDB
REMS
RIRR
RKTM
RMNWW
RTRE
SEA
SIKR
SIVA
TDI
XARI
XOMN
YILP
????
????
????
????
????
????