Paul, As we discussed at the January 17, 2013 meeting, we all agreed to accept the counters from Eljen made 1/8 inch shorter than our specifications call for. https://halldweb1.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_January_17,_2013#Minutes -- Mark -- Mark M. Ito, Jefferson Lab, marki at jlab.org, (757)269-5295