[OT] Princess Bride and Lead Rot

FMA said:

This is now the second Princess Bride reference in the
past 30 days. . . 

[Tomb] I assume you are referring to a number of threads that were
obviously "To the Pain!"?????

;)  

Lead Rot: Could a bath in some solution (perhaps slightly acidic or
basic?) clean/sanitize the figure? If the figure is cleaned, could it
not be painted to prevent a recurrence? Does the rot affect non-lead
white metal? It seems there ought to be some recovery possible. 

Someone mentioned (Henrix?) not storing figures cold. How cold is cold?
Air conditioned chilly basement cold? Or freeze-your-ass-off winter ice
cold?