Question about Tonestack in Duncan TS Calculator

[pappasmurfsharem]

Bread boarding around I kept all the values as there were and threw a 2K resistor with 6.8nF  to ground after the Tone contorl but prior to the volume pot.

according to the RC calculator this is a 11708.5hz corner frequency.

This seems to have "fattened up" the overall sound nicely was playing through a clean channel on my POD XT with headphone so will need to put it into the mesa dual rec tomorrow to verify and alter the values.