Blu, possibly, but, it seems like something that all of us with 13 oz. kilts are suffering from. In my case, I think it has a lot ot do with sitting, especially if I've been doing a lot of driving in the Lennox kilt, it'll get a bit more curled than normal. Whereas the MacKenzie or the Armstrong seem not to suffer from the curling issue. I have decided to relegate the Lennox to summer wear only, though... That way, it won't develop wrinkly and curly pleats as much as it has over the past 2 years. Probably will alternate between it and the Armstrong in the summer, like I've been with the Armstrong and the MacKenzie during the winter/springtime months.
-J