[Treadus]

We have used hot glue to get a good fit in the VersaChassis hex shaft in the past with great results.

This year we hot glued the encoder in the shaft, but ended up breaking one of our encoders (the shaft seized up). Likely due to shock and shifting alignment on the encoder. You know, catching air over defenses and all.

To echo one of the previous suggestions, I would highly recommend using a helical beam coupling to protect the encoder from shock and so you don't have to stress out too much about alignment. Especially for this game. Since we seized up the one encoder, we've moved to using a helical beam coupling and have had no issues.