HI, Just finished a flight to KSDF and i had the same experience. Hope JF can solve it soon. BTW, I am only getting about 133 IAS at 3500’, trimmed, 25x25, and leaned a bit. Leaning doesn’t seem to make much difference.
Also with the FP on the G-530 i seem to see it wandering about a bit trying to follow the heading; after getting a bit off to the left it will correct, then 5 minutes later get off in the other direction. Is this normal with this 530, or does it have problems that need to be fixed? All replies greatly appreciated!!