I have worked out why my shino glaze went wrong- I put China Clay in, instead of Potash Feldspar.
Partly following the wrong recipe, partly being overtired and needing the job done yesterday in a cramped workshop.
The good news is that now I know that I have a tub of orange slip!! -Which explains why it crawled so well, having been put on bisque pots. It should work beautifully on fresh pots!
Glaze mixing first thing tomorrow, ready for next Wednesday's kiln packing