SO...in case anyone finds themselves in a similar situation...
There are indeed two versions of the ES2 preamp, a lower output version is what now comes standard the 114e (and others, I assume).
I called Taylor. They're going to provide me, free of charge, the original higher gain preamp. But I have to drive 45 minutes to a Taylor authorized for installation. They said it takes a special tool to mount the unit. I don't know if I believe that, but what can you do. And, at this place, I'll lose the guitar for about a week and a half which I'm not thrilled about, either.
Since I really only fingerpick on this guitar I'd like the higher output. I prefer to pad hot signals at the mixer input anyway.
Thanks for all the information. If anyone's interested I'll let folks know how the switch back to the older, hotter preamp sounds.