I have noticed that I have different line lengths - can minimal differences in the line length have an influence on the flying characteristics of my kite?Updated a year ago

Yes! Since the lines are exposed to high and different loads, it is quite normal that these can change over time and minimal differences in length can occur. To achieve the best possible performance of your kite, it is important to check the line lengths at regular intervals and to adjust them it if is necessary. You can do this at the bar as well as at the back lines (steering lines). See your Duotone Trust Bar manual.