The encoder on the main board PCB does not protrude very far above the surface of the enclosure, which means that the nut securing it doesn't have many threads to grab onto. There's about 10mm from the PCB to the enclosure surface to work with.
The current encoder, the PEC11L-4120F-S0020, only extends 11.5mm from the PCB to the top of the threaded section.
According to current research, the best alternatives are either the PEC11H-4120F-S0020 or the ACZ11BR2E-20FD1-20C. Either of these extend 13.5mm from the PCB to the top of the threaded section, which should work much better.
The encoder on the main board PCB does not protrude very far above the surface of the enclosure, which means that the nut securing it doesn't have many threads to grab onto. There's about 10mm from the PCB to the enclosure surface to work with.
The current encoder, the PEC11L-4120F-S0020, only extends 11.5mm from the PCB to the top of the threaded section.
According to current research, the best alternatives are either the PEC11H-4120F-S0020 or the ACZ11BR2E-20FD1-20C. Either of these extend 13.5mm from the PCB to the top of the threaded section, which should work much better.