Square Shower Drain Grates Polished Chrome PVD

It's a Nice product. However, your website stated that is would be a direct replacement for a Oatey drain. It does not. It shows to be like 1/8" smaller diameter. It threads in very loose with a couple threads barely catching. I matched the threads up to the Oatey. The thread pitches seem to be the same, But the Ebbe drain riser thread daimeter shows to be slightly smaller. I have a standard 2" round Oatey Shower Drain. I wanted to go with the square design. I still need a square drain, So I a going to find a way to make it work. But it really does not thread in correctly....