Temora has been in dispute with Avalon for a while now. The problem can be many-fold, depending on who you talk to. The real reason is probably one of, or a combination of, these.
1. No hardstand parking is available for the warbirds because it is all needed for the heavy stuff.
2. Avalon is a very dusty place and several warbird owners won't take their planes there.
3. The Avalon Airshow is a commercial venture and therefore TAM is well within their rights to charge full cost recovery and perhaps more for their planes, which ASDU won't part with.
4. TAM only takes their planes to shows that support aviation heritage themselves, such as the HARS fly-in, Albury and Point Cook. They also support groups that occasionally support them.
5. TAM wants people to come to Temora to see the planes.
OAC at Tyabb also won't go to Avalon anymore. Having spoken with people involved in the airshow business on this very issue, all of the above have been brought up.
Walrus