Animation tweaks & Duration/Tracer Tweaks

- slight adjustments to balanced forward feet
- extended the swing of heavy left(previously heavy right) to follow
through to characters left side.

Tweaked values:
- heavyLeftString1Mods    =(2.0,0.70,1.05)
- mediumForwardString1Mods   =(1.3,0.5,0.7)