3/8 fuel line problems?

I have a question to throw out there for everyone's opinion I bought and installed a 3/8 fuel line from the" Right Stuff "it did not fit very well on a 67 Barracuda notchback. The bends where probably bent from the original measurements for a 5/16 line and they didn't take into consideration of the large size tube so the bend that goes from the frame above the fuel tank was to long and didn't line up with the sending unit. I just want to know if anyone else used this company for there pre-bent fuel lines? Has anyone else used a 3/8 fuel line from" inline tube" or" fine lines" and had any issues with installing it? I do have a 5/16 fuel line laying around to use instead but, would like to stay with the 3/8 line my sending unit is a 3/8. Let me know your thoughts Thanks
Pat Faley
67 NB S Clone
East Peoria IL