I have tried getting the 'Mortog Smootch' avatar for a long time.
<-- That elusive &@"&é!à) if anyone is interested and I think I might have found a strategy!
It doesn't always work and it took me a few tries too but hey it could be worth a shot!
The trick that managed to get me the avatar is : 1 1 2 4
That's all...
Play the game, click the 1st mortog.
If he transforms YAY, if he doesn't..try again!
If you collect your neopoints after that you get a spiffy little message saying you've collected the NP and got yourself an avatar!