GT750J fork and spring dimensions

[t20racerman]

Hi all
I've got a BSA A10 fitted with early kettle front forks and 4LS front hub. The front end was too stiff though and I had a thread about this a while ago:

viewtopic.php?t=13538

The springs being too stiff for the lighter BSA were correctly identified as the main problem and after trying some XS650 springs with suitable spacers (much better!) I'm now in contact with suspension specialists Icon about getting some suitable springs to make the front even better (The XS ones need a little too much preload and still bottom out on occasion)

Long story short, I need the GT750J fork and spring dimensions for Icon to see if they can help me out. Unfortunately I no longer have the original 750 springs to measure. Icon also need the original fork length, which I can measure, but not that easily as I have extended endcaps on mine to fit BSA yokes, and the tops are all inside the headlamp shroud. So, If anyone knows the dimensions (or could measure theirs!) it would be REALLY helpful

Thanks
Adrian