I machined my nuts today. Ok, HEX nuts. It didn't hurt. These are the two nuts that capture the ICM and battery grounds to the ICM bracket studs, and are BEHIND my new idler bracket. This allows me to move the idler a tenth of an inch farther away from the belt. I removed 50 thousands off each face on the mill:
This is the belt/brackt offset before (.050" or so):
And this is the offset now. Somewhere between .100 and .125". Very comfortable now:
Belt is tracking straight and true, very happy with the results. Accelleration is MUCH stronger because of this. I obviously had belt slip on accelleration before and didn't even know it. Now I'm going to switch belts between the cars so I can get the noise POS Gates Micro-V belts off the Zilla and put the Gatorbacks (with only 2k miles on them) back on the car that'* fun to drive.