Exhaust manifold leaks

My passenger side manifold has an exhaust leak. It seems to have started after the engine was rebuilt.

I just had the exhaust system done and it still leaks around there. They said it was coming out near that heat riser thing and where it connects to the head. There is a lot of rattling noise coming from there.

Do I need to get a new heat riser kit and have the manifold resurfaced or is there anything else that can be done?

Thanks for any help with this