I was thinking if you could find away to show the line attenuation in the Stats Editor as at the moment it just shows N/A but as the HH5 is able to show the line attenuation figures at least it gives them and idea for the local loop length.

as it looks like the HH5 just uses the signal attenuation from the U0 band and D1 band so my line attenuation would show as 7.8dB Upstream and 21.7dB Downstream.

If BE1 can confirm the correct information to use from the stats then I can add it to the stats displayed. I have a vague idea they not available, but I'm sure BE1 can confirm.

the 21.7db /22.0dB DS shows me being 1600 meters from exchange using kitz calc which is near to correct give or take 50 meters and if i divide that by 2 to the FTTC cab I get 800 meters which is correct.

I'm not sure your logic is correct, surely on FTTC the line attenuation would be to the cabinet and not the exchange, also you're presuming the cab if halfway between the property and the exchange in your example, which may be so in your case but not others.