Here's the best pic I've found for the o-rings...
You need 6mm screws, #4 washers and o-rings. Tighten just so the o-rings begin to compress.
I will not be racing the 1/8th Nats, but will be racing the Paved Nats.
Read grasshoppa....pg 106. Your assignment...read the whole TC5 thread and come to the track prepared!