Previous neutron studies of powdered Gd2Ti2O7 (GTO) have shown that despite it relative simplicity as an s-state Heisenberg antiferromagnet, the magnetic structure is a fairly complicated k=(1/2 1/2 1/2) 4-k structure with 1/4 of the Gd spins remaining partially disordered. This result doesn't fit well with either Mossbauer/ESR measurements or theoretical calculations - and furthermore - seems to be incompatible with a very recent WISH investigation of the field-dependence of the magnetic peaks. That experiment seems to suggest that the magnetic structure is single k. But if this is the case then the cubic symmetry is lowered, and must be accompanied by a structural distortion which we now plan to look for using the HRPD diffractometer. We will require 2 days of beamtime on HRPD with a dilution fridge in order to complete this crucial experiment.