Boss FA-1 Rehash Circuit Dilemna (Dilemma) Need Help

[bluelagoon]

More Questions
on this FA-1 circuit, I were considering placing a pulldown resistor on the input. But did not really want to change the impedance too much. So were wondering if I replaced original circuit value R2, 3M3 resistor for a 6M2 resistor and placed a 6M2 pulldown resistor at the input, would this mess up the existing relationship of R2 biased voltage onto Q1 Gate? or would it suffice to still be same compatible circuit with aprox. 3M1 input impedance?, Please see pics. Thanks.