Two things on "blackfacing." 1) Do those of you who have "been around the block" remember when people started to talk about and practice "blackfacing" silverface Fender amps? It seems like this must have been fairly recently. I don't think people were doing this in the 90s, but perhaps I'm wrong. 2) On the relative merits of "blackfacing": Of course this all depends on the amp. The larger Fender amps went through much more change in the CBS period than the middle-sized and smaller amps (e.g., Deluxe Reverb, Princeton Reverb). For this reason, I've heard folks on this forum say that "blackfacing" a SF Deluxe Reverb (for example) is pretty much a waste of time. I asked my tech his opinion of this vis-a-vis my 1976 Deluxe Reverb, and he said the same thing. He was also skeptical about the idea of the suppression caps on the grids of the power tubes making a lot of difference in tone (i.e., bleeding off higher order harmonics). Here note Gerald Weber's claim in A Desktop Reference of Hip Vintage Guitar Amps, p. 66: "These 1200 pf capacitors kill tone! They go directly from the power tube grids (pin 5) to ground. Higher order harmonics are bled off by these caps." If it is really the case that "blackfacing" a SF Deluxe Reverb is mostly just about being able to say that your Deluxe Reverb is now in blackface specs (perhaps some of you will disagree with this, though), then why do people continue to claim that "blackfacing" a SF DR makes a remarkable difference in tone? This paragraph is a description of a "blackface" mods kit for a Deluxe Reverb (http://www.vintagefenderamprepair.com/product/deluxe-reverb-blackface-mod-kit/): "You will truly be amazed at how much better your silverface Fender will sound after completing the blackface mod. It will have more depth, touch sensitivity, & a full, rich sound loaded with beautiful harmonic overtones." Do vendors really believe this stuff, or is this just writing to sell stuff that customers don't really need? Who's ready to call B.S.? Who's not?