CCL:G: High-precision NBO Fock matrix output?

 Sent to CCL by: Xing Yin [xiy726{:}]
 Dear All,
I'm using the built-in NBO in Gaussian 09 to do some analysis. The printed Fock matrix in natural orbital basis has only 4 decimal digits and the smallest non-zero matrix element is already 0.0001 Hatree (~21.9 cm-1), which is too large in some cases. Is there any way to get high precision natural orbital Fock matrixes in the built-in NBO 3.1? I do not have access to newer NBO versions.
 Thanks and best wishes,