This is normal. It is because of the first layer thickness setting. Since your first layer is 0.25 mm thick, the printer moves to 0.25 mm above 0.

If your printer is printing too high for things to stick to the bed, then you should not adjust this setting. Instead, you should either relevel the bed or use the baby stepping controls to adjust the printing height on the fly.

Thanks - I'll take at the belts and pulleys and see if that sheds any light! Appreciate the response!

Cheers,

Paul.

I'm having this problem as well. It appears to have cropped in version 1.5.1. I don't see a "Center On Bed" checkbox available in General -> Output Options. Just Verbose GCode.