If this is not welcome here please delete.
I have a couple of face book groups, and I hear you another Facebook group ( )
anyway one is for sales of track or race gear which is here https://www.facebook.com/groups/395188990584795/
the other group is more closed as it is just track related https://www.facebook.com/groups/1429422493942538/ it mostly Victorian but it is expanding into NSW and SA.
I post all track days and what ever I can find to help the track bike rider.
once again if this is not welcome here please delete as I know a group like this will have more information available
thanks
The_Brick