Thanks for that. I'll give this a go and if that doesn't work, I shall have to exchange it for a new (and hopefully better) Glo.
Point is, apart from this I really like the device, far more than the Paperwhite I had earlier (also faulty
) because it is less restrictive in the formats it uses, the front light is more even and because I like the interface.
Final update: unit returned, new one received. Seems to work better, and light is less blueish, too.