I ordered lots of different Ts (tees?) to try to find something good for the manifold pressure tubes, and finally found some that I think are excellent.
https://www.ebay.com/itm/251886532058
https://www.ebay.com/itm/251886532058
![s-l1600.jpg](/proxy.php?image=https%3A%2F%2Fi.ebayimg.com%2Fimages%2Fg%2FL8UAAOSwIWVY%7EbTs%2Fs-l1600.jpg&hash=596b61dbc8ebf96db87463c7383161d7)