QTR-Quadtone RIP

Kip,
Don't know about the 4800, but the newest release of QTR has a set of 
curves for silver rag for the 3800.  There is also a set of generic 
curves as a starting point.  I have been finding the d max from the 
silver rag curves is low, but increasing the black boost seems to fix 
that.  
These curves might be a good starting point.
Hope this helps.

Peter