I've now read the back page of the instuction sheet

And discovered that 19 is actually 1900, so I feel happier

3rd attempt I managed to wrapped the starter cord round the motor and LEDs - nearly ripped an LED off

Trust me to break the damn thing before I've started. Managed to free it though and it still works. Now upto 2850. It's tries to move elliptically - bit of a struggle to keep a fluid, circular wrist action. Is it supposed to do that or is it off-balance?