We wish to continue our detailed measurements of the perfection of the vortex Bragg-glass phase in the high temperature superconductor Bi2Sr2CaCu2O8 and distinguish this from the real vortex lattice phase. In two previous experiments on D22 (2006, 5-42-149) and recently (September 2011), measurement of the Bragg-peak intensity does indeed show signatures of a subtle change in the nature of the vortex lattice above ~40K, the Bragg-glass de-pinning temperature. Our first allocation of beamtime did not permit us to make a full structural investigation of the vortex lattice though this cross-over. In our recent experiment we began to make full rocking curve measurements (longitudinal vortex correlation) at several temperatures above and below the Bragg-glass de-pinning temperature. In our recent experiment, due to many cryogenic problems, we were only able to use about 1 ½ days of the allocated 3 days. Despite this we now have some data to support the idea of a Bragg glass transition and corresponding structural change in the vortex lattice above about 40K.