Yep Z and Y axis ae fine.

Quickets way to find out is replacing the chip,Irving as they'e only pennys to buy.

Will let you know in a dy or two how I get on with it and inform you as to whether it was the chip.

For now I've neglected other work messing around with this and I'll tackle that work till I nip down the towny for a replacement chip.

Many thanks for your help and those who chipped in,appreciated