Before I reassemble everything, should this not leak? Correct 7mm fuel hose with all factory hats on both side. All hats are snug and looks like factory setup.

I would prefer not to use clamps. What`s your opinion??

 

That's how I did mine 3 years ago, no leaks. The key is using the correct size hose. Run the fuel pump and check for leaks before starting the car.