Ok here is an attempt. I loaded the Clouds.obj from the fixed scene.dat into MS Excel and rised the values. Now the clouds hemisphere should have to be twice as large and should permit a range of 16km. The Clouds.obj must be imported into the scene.dat from the 16km vis mod.
Give it a try, ...I did not test it, have no 3DMax and SH3 here
Clouds.obj