Keep the superglue in the fridge. It lasts longer but be warned that the cheap superglue tends to set in the tube afore ye can use it.
I've had some of the £1 store thin stuff for ages Lee and had no problems with it, touch wood. I have had problems with the cheaper versions of the thicker stuff however
I've bought cheap SG and found 2-3 of the tubes were already set, when on the store shelves... but as they were in the same sort of Cheapie Shop here, the average price for the tubes that were ok is still cheaper than the Named Brands at the hardware store.
SG & Talc is a brilliant filler - I just love the SG-quick setting time, coupled with the fact that the Talc filler means it's only plastic-hard, not straight-SG Granite.
And great work on the Hurri!