OK, here is my one week update.
Stanley has progressed marvelously. He puts the ball in the cup every time. I started with a golf ball sized wiffle ball and a 2 or 3 inch stainless steel feed bowl. Once he got that it has been a breeze. He is now dropping quarters into shot glasses. I am on my way to teaching him to put coins in a piggy back (thanks to Michaels 20 parrot tricks in 2 minutes video). He will walk all the way from one end of the perch to get the object and then all the way back to put it in the cup. He completes this task 90% to 95% successfully, such a smart little guy.
Ollie the GCC however, still randomly tosses the ball. It has been a real test getting him to understand. I think I started making some headway yesterday, but I will see in the morning. Hopefully, once he gets it he progresses as rapidly as Stan did.
It is wierd, because this is the first trick that Stan picked up on before Ollie, and boy is there some real disparity in how fast they make it happen compared to the other tricks. It would take Stan 2 to 3 days longer to get it. Ollie is now about 4 days behind and not making up much distance, hopefully he kicks in the turbo soon!!