One thing I have found with drip coffee makers, and yes this includes the vornie.. if you start out with warm or even hot water in it, the overall 'throughput' of water is a bit higher and that can sometimes help with the shower head dispersal if you have issues there.
I can't remember the name of it, it was a coffee forum I was at years ago, (not SM's) but I posted a kind of a 'airgap hack' for drip pots where the hot water runs through the cold water resivoir and gets cooled down.
Long story short, put a piece of tubing over it to put an 'air gap' between the hot water and the cold water in the resivoir, that keeps the hot hotter as it passes thru to your spray head.
Ok ill shut up now.
Aaron