Sport Gearbox Output Shaft

I am happy with the product, but the ⅜" hex shaft does NOT protrude 1" from the gearbox, it protrudes 1¼", because there is a ¼" shoulder. I understand why it is there, but it nearly broke my packaging.

We needed a 4' shaft. None were available so we tried these. They worked but the female collar was too large and we had to offset the transmission back which cause other issues. We used one of the spares we bought to extend a shaft to an arbitrary length and that worked great.
The four screws that hold the collar to the transmission shaft loosened up. We were really surprised by that. We'd consider red Loctite on these in the future.
We wish that AM would include an extra snap ring with the shafts.
Overall a good option but packaging around the female collar may provide a challenge.

Extended shafts are important. Good to have multiple choices on length, and changing the shaft is easy.. Since these require removing and installing a retaining ring, we would like it if the ring specifications were given in the product description so we could know what to buy to replace the retaining ring in case we damage it in the process..

We needed a 3' output shaft from a 36:1 Sport to drive our arm spool. Following the quick video on how to replace it made this a perfect replacement. Simple, quick, accurate. As the title says, easy peezie!

These were easy to use but we found we needed to loctite the set screws since they shaking loose.