Hello. I normally use hardness '3' Vandoren reeds. Recently I played on hardness '2.5' Legere Signature reeds for about 1 month, and today I went back playing to my old '3' Vandoren reeds, but I found I cannot play as easily as before on them. The '3' Vandoren reeds used to feel not too soft, not too hard, but now they feel quite hard. Is it my problem or the reed's problem? Thanks.