Greetings, Please take a look at the mapping I completed for the EC. If all is satisfactory, I will upload the header file used to do this along with the header file to calculate UVW. (Once I learn how to upload to my svn). https://clasweb.jlab.org/rungroups/g12/wiki/index.php/EC_Knockouts_and_ECxyz2uvw Please comment BR MK