The Extra Fine one may be slightly scratchy but that's because EF nibs are sharp and are not usual to be scratchy. However, they should not feel like they will pull off the paper fiber. They should still write well.
For Lamy pens, if you buy at stores, I suppose you can try. If you buy online then there's no way to try them. If you really consider yours to be scratchy, you can contact Lamy, I believe they have lifetime warranty to for their nibs.
The Extra Fine one may be slightly scratchy but that's because EF nibs are sharp and are not usual to be scratchy. However, they should not feel like they will pull off the paper fiber. They should still write well.
For Lamy pens, if you buy at stores, I suppose you can try. If you buy online then there's no way to try them. If you really consider yours to be scratchy, you can contact Lamy, I believe they have lifetime warranty to for their nibs.