Version: 0.5.0.d for 1.21.1
NeoForge version: 21.1.133

As described, i found out there's wheels dupe. No other mods used.

Steps to reproduce:

1. Place Automobile Frame on Automobile Assembler.
2. Place 1 Wheel on Automobile Assembler.
3. Click with Crowbar on Automobile Assembler.

As result you gets 4 wheels instead of 1.