ah! so you had to do a complete "piezo swap" in order to get the LR Baggs to sound off properly? That was what I was concerned about when looking to purchase a 2027xvv - exactly that!
What did that run? Also, was it worth the cost or was the LR Baggs "working," just not hard enough?
That was the most interesting, and most desirable trem for me: I've always wanted to replace my lo pro edge with this one, but finding the trem is just as hard as finding a good condition 2027xvv, let alone a great/excellent condition one.
My oldest one had a preamp swap because in my early days of swapping in and out pickups, I managed to trash the preamp's internal phase switch*. The preamp worked fine though. Then, later on when I felt I was stronger with my soldering skills, I bought a new preamp and did the swap. The mew preamp already comes with an ON/ON/ON switch for the Mag/Piezo mix.
When o got my second one, I the first thing I did was a saddle swap between the 2 guitars since they came with opposite alternate phase combos, it was a direct test, the older one got all white wire piezos and the other all black wire piezos. The complete PIEZO SWAP on the older one was done a couple years ago (tops) due to me feeling that some of its piezos could be "fading out" so I ordered a 14 set of piezo elements from LRBaggs just to have backup. These are 20 year old guitars and supplies are starting to run thin. Some of the piezo wires were also getting shorter due my not so good soldering skills back then. Also take notice that these guitars are played every week and one of them almost every day since I bought it new back in 2002.
The purpose of this saddle swap was to have all strings in the same phase when mixing piezos and mags. Piezos alone were fine, but when mixing with mags, one would get alternate out of phase sounds per string unless the Piezo Volume was set to minimum. Once I've done this swap, it opened a whole world of tones, because the Piezo Volume works as a mag/piezo blend when the switch is set to mix. Neck split + piezo is a wonderfull tone to play with for example, specially since I can now manage to mix IN or OUT the piezo influence.
As far as I know, the major problem these trems have are the saddles, which are different from the regular LoPros and are no longer being produced. If one of them breaks I'll be forced to find an EdgePro 7 trem, whose saddles can receive these piezo elements with little modifications.
If my opinion serves anything, these are great solid guitars and very well built. One has to do some mods in order to get the most out of them, their original PUs are functional but far from being great...
* I was like, "Hey an internal switch!, I wonder what does it do?..." and my goofy hands at that time managed to bend it and when I tried to fixed it I broke it for good...