Last Christmas my LSS in Australia had run out of Stickles in red, and I desperately needed some so I got Studio G instead. It was always really gloopy and nothing like as nice as my beloved Stickles, but now I can't even get the dratted stuff out of the bottle. I stored it nozzle-up and it just won't flow.
I've tried putting it upside down on the radiator, shaking it and squeezing it. And shouting a certain amount of blue air at it. Nothing has worked.
Short of cutting the bottle open, can you think of anything I haven't tried? My next step would be pitching it.