Tichy USRA boxcar weights

James Mischke <jmischke@...>

I notice that the Tichy USRA boxcar kit has no weights. The
floor does have hexagonal ridges to accept a pair of hex nuts.
The directions are silent on weights.

What size hex nuts accomodate these features? Are they about
an ounce each? Is that hex nut size good for boxcars in

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