Hey! Are you still having trouble getting good prints? I'm really experienced with 3d printing, if you have any questions HMU. Also, I'd recommend not printing in petg for a project like this. Instead, I'd suggest Esun PLA+! I've been using it for my build and it's super strong (as strong as PETG) while being super easy to print. I'm my experience PETG is really difficult to get good prints out of. Check out my thread if you want to see my printed build so far, im also using an EOD helmet, and let me know if you have any questions!