A few years ago and I were down near Lincoln City...for a week's getaway at a rental house right on the beach.
One afternoon while I was flying my then new and favorite old $89.00 HQ BREEZE kite in wind that you could only feel if you walked slowly backwards.
I put on my headsets..turned on some nice low wind music....and began enjoying some of the smoooooooooooothest Zephyr light winds that I had flown in years.
About 4 houses down from our rental house and after flying for a while....between flights... I noticed a older gentleman who was struggling and attempting over and over again to fly him beautiful new Prism kite.
After seeing that he had been watching me flying from a distance...I noticed that suddenly he threw his hands and his flying straps up in the air...and came stomping up the beach toward me....all the while holding his kite in one hand and dragging the still attached lines in the other all the way up to where I was flying.
How many times in our addicted KITE LIFE have we seen situations like this begin to unfold? This old gent was ready to take that beautiful brand new kite back to the kite shop for a "kite like the one I was flying."
After telling me he had paid almost $300 for this kite and lines...etc. HE MADE ME N' OFFER THAT
I HAD TO REFUSE that he would trade straight across that new kite for the kite I had been flying? 
I asked if I could help him set up & "tweak" that new Quantum Pro SUL and then give it a test flight.
1. First he was flying with 125 ft. of 150 lb. line
2. One line was about 6 or 7 inches longer than the other one.
3. He had one bridle line wrapped around the left upper spreader.
4. Also the bridle had been set for stronger wind.
After giving him a set of very old 75 foot #50 lb. lines that I attached onto his beautiful new Q Pro..and after resetting his messed up bridle setting AND MOST IMPORTANT---
After giving him some demo time...and a few badly needed flying instruction hints.....HE WAS IN QUANTUM PRO HEAVEN...AND
RIGHTFULLY SOOOOO,... HE RETRACTED HIS OFFER TO TRADE STRAIGHT ACROSS for my little $89.00 HQ Breeze kite.
While he was flying...I cut, n re- sleeved & pre-stretched his #125 lines n handles to the same exact length.
HUMM?
Two days later.....I saw a nice little HQ BREEZE KITE 4 houses down the beach....cutting holes in the sky?
THINKING BACK?
MAYBE I SHOULD HAVE TAKEN THAT OL' GENTLEMAN UP ON THAT "STRAIGHT ACROSS TRADE" after all?