Hello, I just purchased the Ronin S from the DJI store and it arrived yesterday. I noticed this on the bottom of the thread where the tripod connectors etc would go is curved/bent? Does this look normal or can anyone else check the bottom of their Ronin S to see if it is similar? Thank you!

This is completely normal. The threads have helicoil inserts in them. The pin in the larger hole is used during assembly.