Digital BW, The Print

Its been a while but I'm back.

I just installed the VM Ink set with new cartidges and 
components for the bulk ink system. I had been using the FS 
inks. This is on an 1160. I purchased the inks about 6 months 
ago but never used them. Downloaded the curves from the MIS 
web site... etc. 

My question is one of tones to expect. After many (25ish) purge 
pages and 15 to 20 8x10 prints, I don't get the warm to cool shift I 
was expecting. The cool curve is cooler, but not even close to 
"Blue" like on Pauls web page. Actually the warm curve to cool 
curve test prints are not that far apart.

Am I doing something wrong, not yet purged of the FS in the 
heads, or expecting to much?

Thanks for any pointers,
Dave