I've just learned about THD's Yellow Jackets and I wonder if that maybe the solution to the problems with my Hot Rod Deluxe. I find the HRDlx to be too muddy and too loud. I've looked around and found the Blues Junior is a much better sounding amp but, isn't it just a HRDlx with EL84s? Which would you do? Buy a new amp or put EL84s in the HRDlx?