When I’m around 50-60 I have pushed it down to 3 to see if it was in forth and I was just being paranoid but it doesn’t shift, telling me that it is in third. In drive it shift from second to third just fine, maybe a little aggressively, but again, that could be me being paranoid and over analyzing everything.

Do you know what test I need to do or what to look up to find the tests?
Thanks for the response