LEGO Technic #42082 - Rough Terrain Crane: Loose Feet LEGO Technic crane set #42082. Putting the feet on now,  are they supposed to click in somehow? Also, my feet don’t seem to touch the ground. I’m worried I messed up somewhere a long time ago. Help please!
Everything's going according to plan.  Check out Youtuber Sariel's review on your set HERE.  

At about 26mins in, he addresses your concern.  He notes the looseness of the feet when fully deployed, and says there are 4 pads stored in a compartment over the front axle. Just build on.