This is getting me toward the right track.......but I'm aware of the basic lines on the sounding...and how to plot the LCL and then get the surface-based parcel.... But here's my problem.... with the MLCAPE, it takes a mean temperature and dewpoint from the lowest 50 or 100-mb into consideration.......and if I'm not mistaken, it's by mixing out that layer..... But I don't know how to do that..... if I knew how to mix out that layer to get the new temp and dewpoint in question, I could go back through process of plotting the new parcel lapse rate and getting the MLCAPE's graphical profile. I just don't know how to mix out that layer.....