I had alot of problems with the tilesets
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.
Some are a bit solved but not complete.
If i use complete transparent for no shining, the mips will fucked up to a glossy surface.
And some times the mips are getting uneven so that the full size image look nice but far away it looks like a chessboard.
I tried different formats and all ends with the same result.
So maybe there is a way to edit the mip by hand. Or an idea how to fix that.