Bmax4 rear arms; slight play?

[CODMAN]

Hi guys, I've finnished the build on my Factory Team, but haven't raced it yet. Before I do, is it normal to have slight front/rear play at the rear arm inner hinge pins? Mine go back and forth maybe 1mm (maybe slightly less). I've looked over everything, and there doesn't seem to be any washers that go in there... Do yours do this also? Is it normal? Am I missing something?

It's just that this kit is so perfectly tight everywhere, I'm surprised the rear arms have play like this and wonder if I missed something...

Thanks in advance for any help!