All spools have a powder on them, when you tie your line on the spool and flip it closed take a couple of sheets of damp paper towel and spool the line on with it going through the damp paper towel, this not only takes off the powder but it also helps stretch the line some.

Absolutely agree not to overfill the spool and I also attach the line to something and walk away from it and then reel the line back on again. It helps stretch it out a bit more.