Many kiters may have experienced broken kite lines typical within 1" of where it's sewn to the sleeve.
Instead of spending $$$ to replace the lines, here's my economical solution:
1. cut off the other kite line's sleeve (shown below in black) at the same point
2. cover the cut ends with 3" of sheathing (to prevent the kite line from cutting into itself)
3. tie the ends (covered with sheathing) with figure-eight knots (shown below in green)
4. extend the lost length with pig tails (shown below in grey)
5. adjust and confirm your line lengths are equal under tension