Ring laser gyroscopes have increased in sensitivity by six orders of magnitude over the last several decades such that
they are poised to make valuable contributions to geodesy and terrestrial tests of general relativity. To fully exploit their
capabilities, residual (time varying) read out errors arising from backscatter coupling must be physically minimized or
otherwise compensated. We present the results of a backscatter correction process for a 12.25 m2 gyroscope with a vast
improvement in long term rotational sensitivity.