Yah, have to watch them as you pull'em up and put'em down.
The "Clicking" in my experience has been due to they've hit their max length or pulled in, i.e. can't go any further.
Solution: Back it off a little, "..reversed thrust Scotty"
I've been able to back'em off as soon as I hear the click but best practice is to either "Mark Perma Pen"? or figure 3" when up. There's a measurement on the jacks when extended, but hard to read. Just use the Red Blocks to keep it from extending too much..
I hope that helps as that's what I've done with the clicking...
Also, FYI, after awhile the remote (assuming you have one) will stop or start to intermittently work, just change out the battery. It's a special one so get several, should be at the local stores, Walmart etc..
cheers..