stripped trailer jack gears

I have taken 3 of various brands of those bevel gear jacks apart and they are all pieces of ****. If you take it apart, you will see that the ONLY thing that holds the vertical parts in the tube is a SMALL PIN driven through the top of the shaft and the matching bevel gear. If something breaks, like the gear or the pin, that whole mess will fall out of the tube. As far as I'm concerned, that design is crap, and all the Chinseoizationification'ots copy each other and push the bad design down the road, pun intended

"If there is a fix" I would go further than Inertia did, as it all still depends on a pin. Maybe weld a nut, I don't know....................