If the problem is that Rossi-related threads are always near the top of the thread list because of their high traffic, then sever that relationship. Put all the Rossi stuff in a single appropriately named thread that is permanently pinned somewhere other than the main thread list.
On a different topic, how do I start a new (nonRossi) thread on this forum? I have never done it and thought there would be some obvious method. But I don't see how.
Are you on your phone/tablet or in your PC? In a PC You have to click on the forum tab and then select the most appropiate sub forum for your new thread.