Leaking stainless brake line

[BigBlockOlds]

I have all stainless brake lines that I mocked up and had professionally bent and flared.
I've finally installed of my brake parts on the car and bench bled the M/C and installed it. I haven't bled the brake system yet since I have a hydroboost system and can't until the engine is up and running.
But, gravity so far seems to be doing a pretty good job getting the fluid through the lines because I came out to the barn this morning and found a couple of small puddles at the rear of the car.

I didn't have the fittings tightened like I thought so I snugged all of them down, wiped everything up and let them be for a while. Come back and two of the fittings at the 'T' block on the rear end seemed to seal just fine. But my drivers side line is still leaking between the fitting and brake line. This is on the end that connects to the rubber caliper hose.



I've loosened and tightened it down a few times but its still leaking. Are there any other methods I could try to stop the leaking? I took the line off completely to check the flares and they don't appear to be bad. I was going to try to reinstall it and make sure I get the line centered perfectly in the fitting before tightening it down.

Thanks for the help,