Pro Ject Tube Box Replacing Tubes Help

Sorry this may seem like a bonehead question but what tool do I use to replace the tubes open the unit etc? I tried a torx screwdriver all sizes that didnt work. I really am at a loss.
From the photo, I suspect you need an Allen wrench to remove the long bolts from the tube protectors. Once removed, you can easily pull the tubes out by hand and replace. Gently rock the tube and never force it in or out.
Mine has Allen bolts.
got it thx