[name]

first off i would do what is posted above, MU figures all seem to suffer from the "plastic memory" issues when they are first taken out of package to a degree.

if that fails me then i go to step two and use a coat or two of future floor polish for loose ball joints. it adds a layer of acrylic plastic to the joint beefing it up. best of all if it doesn't seem to work out you can just wash it off with hot water and an ammonia based cleaner like windex. you wont risk permanently damaging your figure like you would with other similar methods