After some help from Colin Farrer of MakerFarm, I made my first useful print today. They are the two gears from the Wades Extruder. They are not the ones supplied with the kit, but will do for backups.
A couple of things that I found to be important:
1. It is essential to set the Z-Axis endstop so the gap between the bottom of the extruder nozzle and the hot bed is between 0.1 and 0.3mm (4 thou - 10 thou")
2. The hot bed glass has to be squeaky clean and dust free before it is sprayed with Garnier-Fructus Maximum hold hairspray.
I've attached a couple of photos.
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