Thanks for the replies. I talked to the manufacturer rep for the ortronics ends, and he replied much the same. Although he is in favor of the fiber passing, just no where close to what it would do with the correct ends. Something I left out earlier is that the fiber was only reterminated on one end, thereby leaving the other end with the correct connectors. He did say that if both ends were terminated with 62.5, I could be in a little trouble on passing. I'll be testing the fiber on Friday of this week. I'll post the results, if they're not to bad. Thanks for the help.