My father has always said "necessity is the mother of all invention", very true. My stupid gung-ho and roadblock figs always fall over. Now its not so bad since they added the second peg. That being said, here's how you fix the earlier figs. hope it helps you out!
what you need-
Drill bit: size 3/32"
One knee peg
Figure stand
dill out the base from the bottom up insert the peg ( which should fit tightly if done right) then just place your fig. TAH-DAH!
the last pic is bad but I'm holding Gung-ho sideways and he's staying in place.