I am having airspeed issues.  Started with have problems getting the pitot sealed up which showed low airspeed.  I have now corrected the pitot andstill have indicated speeds well below actual. Yesterday day I recorded 80 KIAS on the Dynon D-100 while I got a speed of 96 off my GPS.  I slowed to 55 KIAS and got 80 off the GPS.  After searching the Matronic forum as well as here I see not many pe…