Issue with Toughbox Mini/encoder

[Jon Stratis]

I'm hoping we just did something wrong here...

We've got the Toughbox mini from the KoP (http://www.andymark.com/product-p/am-2236.htm) fully assembled, and are attempting to mount some encoders to them (http://www.andymark.com/product-p/am-0180.htm).

We haven't had an issue doing this in the past with the Toughbox or the CIMple boxes... However this year we're putting the disks on the shaft for the encoders, and they're sliding on loosely - it's not a press fit like in the past.

Has anyone else run into this problem? is there something we could have done wrong assembling the gearboxes? Both the gearboxes and the encoders are brand new (the encoders just arrived from AndyMark yesterday).