It seems that the instructions in the manual for loading a new gel string are wrong. It states that the trailer should go on the right spool and the leader on the left. I would interpret the leader to be the end of the gel string that is displayed when you are at 0% and the trailer to be displayed when you are at 100% as the default position for the gel string is 0%. This is not the way the instructions are written. In reality the end of the gel displayed at 0% (leader in my mind) is on the right spool the end displayed at 100% is on the left spool.
Maybe I'm just misinterpreting the instructions but it seems like they could be a little clearer.
Thanks,
Mat