Having 2K channels does indeed seem like a lot. The solution is to try flashing different firmware and hoping to find one with less frequency deviation during calibration.
For a simpler approach, just remember your center frequency (2 kHz) and adjust accordingly. If you're working with linear satellites, add (or subtract?) 2 kHz to your calculator's setting. For direct-to-satellite transmission, simply adjust the frequency directly.
The frequency tolerance specified in the k6 approval document.I don't remember the exact number, but I did look it up.The frequency deviation of 2 kHz doesn't seem to exceed his limits yet.