Digital BW, The Print

Paul,  I gather (I can't remember from where) that you've been 
experimenting with potential changes to the formula for the VM inkset 
to make it even less prone to warming over time.  (As I understand 
it, both Piezo and the VM inkset warm over time, but the current VM 
inkset ("VM 1") already warms significantly less than Piezo.) I'm 
about ready to order a second set of the VM inks (my first set is a 
bit below half full), but don't want to be too hasty if you may 
relatively soon be recommending that we switch over to "VM 2."  
What's the status of your experimentation?  Any enlightenment you can 
offer on this front?  Thanks in advance.  Howard