Yokomojo
Check how true the stock spur is. If it has alot of runout it'll rub on the white tensioner pulley.
For those using the red Trinity adapter, you can also use RRP ultra machine spurs. They are 1/3 thinner than stock. If you still hear rubbing check the button head screw that holds the tensioner pulley to the adjuster plate. The washer that we were told to put on before the screw is not really necessary. The head of the button head screw is big enough to hold the bearing in place. Leaving the washer out will give you enough room for the spur to clear the head.