G4226A Autosampler - leaking needle assembly-loop capillary

I have replaced the needle assembly on a G4226A Autosampler.  There is now a leak from the fitting of the loop capillary.  I have tightened the fitting of the loop capillary as tight as I can, without risking damage.  After 6-7 attempts, with the same new needle assembly, it is still leaking.  It is a small leak that isn't affecting the system pressure.  Over time, the liquid will reach the leak detector.

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  • The sample loop fitting does not seem to have damage.  I did try a second new needle assembly this morning and still had leakage.  I have exchanged needle assemblies before on both of our 1290 systems without problems.    

    I am not trying to change the sample loop.  My difficulty there is that the Lab Advisor is not setup.  (That decision is above my pay grade)  Is there a way to exchange the sample loop without going through Lab Advisor?

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