As I've mentioned recently, I just opened up my TRU G1 Soundwave, and he's so cool. So cool, in fact, that, like Armada Tidal Wave, he needed knees. Since I seem to have officially lost my digcam (%&@%*$%&#), please see the cam-phone pic below:
It's a simple mod, took me less than an hour for both legs. I changed it up a bit, tho; instead of just tossing the square of material that has to be removed from the back of his lower leg, I attached it using a rubber band as a hinge (super-glued in place). Thus, in alt mode or when he's standing straight, the panels are in place and the overall look is the same as the original. Bend his knee, and the panel folds itself out of the way. You can see it a little bit behind the left knee. Better pics coming.
Comments please; if you've done this before, please post pics.