Smoothness rails

Hello
Could someone give advice on the smoothness of the rails, once connected to the YZ / XZ plates?

If I would hold it vertically, should they drop by themselves?
For me that’s not the case, but I can slide them up/down with little force.

I use milled plates and believe there is a slight misalignment on my xz plate.

Was the same for me, works great though.

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Thanks!
I am in doubt to make the holes larger so it could be smoother, though.
But I just broke my T8 screwdriver due to tightness loctite created:( so can’t remove my screws :slight_smile: