so how good are graphite shock towers for bashing not that thers anything wrong with the stock plastic ones. i just like the fact that they have diff shock positions. whats this for [link=http://www2.towerhobbies.com/cgi-bin/wti0095p?FVPROFIL=++&FVSEARCH=72215&FVPROFIL=++]diff gear spring[/link]