I am in south central Texas and the airports in the vicinity of my field (5C1) that have Flight Guide airport diagrams have at least a 75' error on their geo-referencing. I have been in discussion with Seattle Avionics but no hint at a fix. The Foreflight non FAA airport diagrams on my iPad show excellent geo-referenced accuracy. Since Dynon has partnered with Foreflight on wi-fi conectivity is there any possibility of using their charts in the future.