Dick,
 
I use powdered sugar always mainly because I buy it by the trailer-load as a
waste product of the candy industry.  They process it themselves so there is
nothing but sugar that pulverized.  It gets as hard a a brick if it isn't
used within 4-6 months.  I've been pleased with the consistency of the
patties and the syrup is still syrup.  I don't see any problems with it.
 
Brian Tassey
Kaykin@ aol.com