FYI i was trying to install my UD pulleys and the crank pulley wasn't cut deep enough and wouldn't go on the crank,,, pulled it back off as it only went on by 1/2" and inside there was a lip that stuck up a bit .....so check yours and make sure the inside of your crank pulley is smooth with out a lip in about a 1/4 to 1/2" ,,,,the lip was by the key way on mine and went 3/8" around away from the key on both sides
hope this isn't confusing but helpful not to get everthing apart and put it all back together,,,, but with the efans it wasn't so bad
BTW the set came from Troyer's group buy