[en] The strong variation in pulse heights over the area of the R211 trigger counters was first noted by C. Leroy and J.P. Matheys (Logbook 4; p. 60) after the anomalous results of the preliminary 31/31 GeV analysis. With these variations it is clear that the lower pulse heights associated with events in the lower stacks could lead to inefficiencies dependent on threshold and high voltage settings. The obvious questions are: (a) What are the magnitudes of the losses required to explain the observed effects; (b) Is there any objective evidence that good events were in fact lost in the 31/31 GeV run due to low pulse heights; (c) Are the magnitudes of these losses compatible with those which might lead to the observed anomalies; (d) Is it possible to make reasonable corrections for any such losses. This report is a brief summary of efforts to investigate these issues over the past month