Don't worry about anything else, it just needs to fit, with slight resistance. The models are mostly interlocking PETG and TPU. This test is primarily for overall tolerance. With your current setup, you can actually print the models directly; if you're concerned about assembly difficulty, simply add some hole compensation.

Tolerances remain a persistent challenge in 3D printing, my tolerance test, theoretically, only requires that two cylinders can be inserted into six holes without being too tight or too loose, a suitable fit suffices. TPU inherently mitigates a certain amount of tolerance, but the model still has areas requiring PETG for mutual fastening, if your testing proves unsatisfactory, I personally recommend using tools to appropriately enlarge the holes after printing. After all, the model's overall joints are dual-material combinations, rendering tolerances inconsequential. Only a few armor components necessitate tolerance considerations.