i have got this rev 1 for about 1.5 yeas ago before i went to the hospital, but i did never get a chance to get is out of the bag. and i just started to fly again. and i wanted to try so i folded it out. but the sail have a lot of places there are miss color some black spots. i have tried to wash it with wet cloth but it did not help.
do any of you have some ide what it can be it have never been in the air.
















