ToughBox Axles Not Up To Spec?

[ablahblah]

Hey all,

We've been having some issues with our single ToughBox gearbox. It arrived last week, and so far, we've found out that the short internal shaft seems to not have been lathed down enough and the hex-shaft is protruding out a mm or so. This causes the face of the gearbox to lift up a bit. I checked all the bearings, and they all face in like I believe they should. If I take the set of bearings on the polycarb plate and flip them so the bearings face outside (smooth surface inside), the problem goes away.

Also, the main output gear has some play in it at any time. I scavenged a spacer from the KOP, think it was for the circular linear guide, and it works, but I have no idea whether I should need to do that.

Help!