I have been using the following method of making and connecting braided loops to all my salt water lines, including 12wts and above for years now, and they have NEVER EVER let me down.
If you have ever made your own braided loops for trout or salmon fishing, you will notice that the method shown differs slightly, and herein lies its strength. I have taken fish to getting on for 200lb using these loops, and as I say they have all stood the test of time perfectly.
I would however advise that you chuck away the loops supplied with your line (I presuming it to be an Airflo) and make up your own, as they will not be constructed as shown in the link.....Should you decide to go down this route and make your own, I use Gudebroad hollow braid in 30lb for lines up to 10wts and 50lb for 11wts and above.
Hope this helps.
There are several methods of making and attaching loops to fly lines