I've gotten in the habit of really working (carefully) all joints on all figures for a time. Some of the construction is done so that you have to just sorta wear it out slightly at first...
With other toy lines it's that the finish/paint ap dries and if you try working joints too hard it'll snap the joint off because it's stuck. That's a problem with the XD line. SW doesn't have that, but they do have joints that are almost too tightly designed and need loosened up, or "worn out" a little bit to really be playable without breakage. The Evo sets definitely had a fragile aspect to them though. I'm cool with that for their quality overall, but yeah these were fragile for "toys". Which is odd because the SA Clone basics were not that way.