Thank @WilliamW @j.stirling for all the advice you’ve provided.
I’ve finally managed to identify the mistake made using the finite version of the optics module. As a result, I’ll need to reprint both the optics and the tall stand. Are there any other changes needed for the print parts?
Additionally, I’d like to know how to ensure that the lens and objective are aligned correctly perpendicular to the optical axis. Any tips or suggestions you can offer on this matter would be highly valued.