I have the same combo and indeed the WA22 makes the LCD-3 (and HD800) sing. What tubes are you using in your WA22? The WA22 is particularly sensitive to tube rolling. With the right tubes, prepared to be blown away.
I'm using the LCD-3 with the Silver Widow (SW). I can assure you that the SW complements the LCD-3 extremely well. With the SW in the mix and as compared with the stock LCD-3 cables, the mids and the highs are very much improved, with a sweeter and smoother treble. Bass is also more controlled and tighter. Definitely a noticeable improvement over the stock cables and I highly recommend the SWs for the LCD-3.