Just realised what the problem is.... The unit showing a % is not the garage door sensor as I though, but an old z-wave light moduel I had replaced. :-( sorry to waste your time.
guess i need to go round the z-wave network and delete the missing item.
Figured out what I had been doing wrong and all good on the lights now.... I had just setup the control bit wrong :-( Ident / Chiu thanks for your patients.
I agree that the zone state is shown so I can see status of the garage door there (this is working). However, I would if possible like to see it in the control menu.