Hey there kind soul! I’m completely new to handling decks so please forgive my incompetence. I just got two new Monarch decks. I opened one just a few hours ago. They’ve been great! They moved so smoothly, I did a couple of rifle shuffles and fans, did some tricks etc. ... but then I noticed that they had gotten dirty on the edges so I decided to use pencil eraser to get rid of the dirtiness. That didn’t work, and after a while I noticed that there was friction between the cards now, when before they glided across each other. I’ve been storing the cards between breaks in this leather box with soft fabric on the inside rather than their own tuck box if that has anything to do with it. I’m worried that I did something wrong, and would like to know what I could do in the future to prevent any smudges on the edges and to maintain that smooth feel between the cards. Also I live in Northern Texas and the climate is pretty temperate, if you needed to know.