Increasing RFID Read Range

Grumpy_Mike:
Adding a R into a resonant circuit will lower its Q.

Connecting a resistor in any fashion into a resonant circuit will lower its Q. Series, parallel, sideways ...

The resistance of the inductor is in its wire. To reduce that resistance, you would need to use thicker wire in re-building the inductor. Which is where as Mike says, you need to be able to calibrate your new components.