Open up "SSSKopernicus.cfg", search in Saturn for "Rings"
Rings
{
Ring
{
angle = 0
outerRadius = 2500
innerRadius = 1250
texture = RSS-Textures/SaturnRing
color = 1,1,1,1
lockRotation = false
unlit = true
}
}
I think that in your .cfg file, outerRadius is 250 and innerRadius is 125, so you just need to add a 0