Amorphophallus titanum dormancy

In July 2000, I obtained an A. titanum seedling from Selby, the seed of which 
had been sown in 1999.  It grew well all last summer on a NYC fire escape and 
continued growing throughout the winter indoors.  It had not changed 
appearance much so I assumed it might continue growing throughout this summer 
so I repotted it.  I was surprised not to find many roots, but a nice firm 
roundish tuber about 4" wide and 3" high.  I went ahead and repotted it, but 
now, about a month later the leaf is yellowed flopping over, as if it is 
going dormant.  I think all of this is quite normal and it is good that it 
didn't go dormant for the first 2 full years and that's why it had no roots 
left, so it should go completely dormant, lest it deplete it's nice tuber.  
Correct?  Now how to store the tuber; dry and deep in the pot, as I do my 
other Amorphophallus species or bring it to the surface and keep an eye on it 
with a little water once in a while?  Cool storage or warm - any suggestions 
would be appreciated.  Do I sound like a nervous father?  
Thanks - Michael Riley
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