Front sway bar question

[Captmatt]

I went up to my local salvage yard to get a front sway bar for my 64. I had several trucks to choose from, all were early 70's 1/2 tons. All the trucks were off the ground with the weight off the suspensions and the suspension components were intact. I noticed that the sway bars were disconnected from the A arms on all 4 trucks. The bars had apparently slipped or popped out of the bushing clamps. That seemed odd to me. As I finished up, an employee walked by and I asked him if he had ever noticed this ? He said " yes, when you take the weight off these old Chevys the bars always pop out." My question is, is that correct? I saw some old threads that kinda discussed this but didn't really answer the question. I'm not sure if I want to go to all the work installing the bar if it's going to disconnect every time I take the weight off the front end. Any thoughts ???