So much for the basics. Experiment with it. Now that you know the maximum limits. And if all else fails put it back the way it came from the factory . Don't worry about changing this setting, leave perfection alone, enhance your styles, your abilities.
Performance always increases with the proper tools.
In quad mode you have 4 lines of whatever weight line you are using managing the pull of the kite. When the wind drops off a change to a lower weight line means 4 lines of the lighter weight, Still a substantial margin before line breakage is a danger. A few new sets of line is much cheaper than a new kite. It will make a more pronounced change in your flying enjoyment than any bridle adjustment ever will. After you get the spectra lines and get them all setup, then try my bridle tips.