I have been doing the Rick Hirsh (see youtube) method for preparing new reeds. Actually, I first saw this method done by a concert clarinetist in a youtube lecture. After a reed is broken in, I stop doing the procedure. Recently, I tried closing the pores on reeds that were already broken in. I don't know if I'm imagining it, but this seems to make a fairly big difference on how the reed responds. Does anyone else do this?