hi badez and welcome to the forums
each character has a direction vector... think of it as a heading on a boat. the heading goes from 0 to 360 degrees. let's say your main is on the heading of 45.32 degrees
then you bring another character right up along side and eyeball the heading. it looks good... as good as it's going to get... it's heading? 45.15 degrees.
then you hit W or up arrow to run them forward. within a short time, their paths start to diverge. this is due to the 0.17 degrees difference in course.
IF you could synchronize the clones to EXACTLY the same heading, then keyclone would keep them perfectly aligned. unfortunately, there is no mechanism for such a thing. as such... we all use follow macros.
check this link for exact instructions on setting up a follow and assist macro
http://www.dual-boxing.com/forums2/viewtopic.php?t=2074
if you have more questions, feel free to drop me a note.
good luck