SEATS TO WIDE ?

If everything is correct, you shouldn’t need to move the seat over. So, back to the original question, can you post pictures of the mounting locations and seats? So we can actually have a decent chance at figuring out what’s going on?

The just a picture of the corner of the seat touching the tunnel isn’t particularly helpful in identifying the seat, or if it has the right tracks, brackets and mounting locations, or if the holes in the floor are in the correct spot. All it tells us is that there’s contact, which you already said.