Shiner - were you getting runs or just spotting - if the runs were from the top it means a bit more rinsing on the top frame - or return to the window after few minutes and just rinse the glass
I am getting good results with my set up but funnily enough made a pigs ear of my own (pvc) a few days ago - quite a few runs - must have overlooked the basics
I am finding that on average I use probably 3 times normal amount on first cleans with the Varistream set at nearly 11 O' Clock on the dial (just in case you have Varistream)
I am the same on the 'leaving them wet' situation as Andrew says - it's hard just to let go sometimes