Cheers, I'll give this a shot, didn't think about enlarging the terrain. Spent hours trying to find ways to reduce sea levels, there are parameters for ocean height in Kopernicus, but didn't seem to do anything, also spent some time researching adjusting sea level but still not sure how Kopernicus determines sea level. Also determined that the texture is the water shader from Scatterer, not SVE+SVT.
I removed Kopernicus, OPA and SVT for the time being (I like my pretty KSP), and it ate one of my stations in Kerbin orbit randomly o.0.