Listing products on other marketplaces?

Hey sellers!

We are a EU based company that does FBM on Amazon.

Currently we operate in Germany but want to list products on other marketplaces.

We tried listing our products through the Build international listings tool on Spain but we have a couple of problems:

-first off, the listing is synced which we do not want because we have different amount of goods for Spain warehoused in Portugal

-the banners/images of our products have descriptive text on them in different languages but when I list it, it changes the images on all marketplaces, not just Spain (problem: banners are then in Spanish instead of German in DE marketplace)

-Is there a way to list products on the same selling account without having the listing synced? I tried listing the products from scratch (not import or International listing) but it does no difference.

I suppose the ASIN or SKU is recognized by Amazon and merges the listings.

I would be extremely grateful if anyone knows how to solve this.