in my personal opinion i think the evader tranny is very temperamental. I never busted an idler since i've always heard of tranny issues in post and went metal early on. Experienced evaders users will not have as many problems as they know the right feel of "snug" -1/8... check differential tightness so often (every 4-5 runs), adjust slipper to track traction (if you adjust the slipper to dirt and then go to pavement and dont adjust your slipper.... hi likeliness of busted)... also there is another thread going on about a guy with a nitro evader that had his clutch shoes inverted (is that you), this will result in a stronger engagement... needles to say he busted the idler..
here is the link to tower for the diff gear
http://www2.towerhobbies.com/cgi-bin...?&I=LXFWF3&P=7
for the idler
http://www2.towerhobbies.com/cgi-bin...?&I=LXFZP0&P=7
and carbide
http://www2.towerhobbies.com/cgi-bin...?&I=LXCPH0&P=7
weather is getting better... get your cars ready!!