How often do you inspect Level-Up jacks?

I took my trailer back to storage after our last trip and when I got home I noticed one of the foot pads from my 6 point level-up jacks was in the gutter in front of my house. I was lucky it fell off right there at home. The bolt and o-ring were still there, so I figured it would be easy to put back together. I drove back up to the storage lot and tried to put it back together, but I couldn't get the bolt started. The threads must have stripped when it worked itself out. I called Lippert and they told me my choices are to either tap the threads back out or replace the jack. I'll go pick up a tap & die kit and give it a try.

So my question is, how often do you all check the tightness of your foot pads? We've had our fifth wheel for just over a year (out of warranty) and it never crossed my mind to check these foot pads. Is this a common maintenance issue?