Remeasured Amps in/out at FULL BLAST with the load moved further away. Im still happy :D
& if is fooling the input higher, then i'd just look like an idiot, so 2 amps input for 20 amps output is still sweeeeet, if the meter is right.
It looked pretty solid even on the transformer, where the field would be highest id think :)

Decreasing voltage, and increasing amp draw causes an increased impedance with respect to the input increasing efficiency greatly.

Moving receiver closer to tower causes an increase in signal, but a decrease in Q on the transmitter. There should be an optimal distance where power received, and power coupled back to the source equate to a maximum power transfer point with greatest efficiency. This video demonstrates both extremes, High Q, but low signal and low Q with high signal. It then shows the optimal spacing resulting in slightly reduced Q, with strong signal.