The Random MT py ( for head alone) turns out a good tool to create many convincing facial expression or new looks. It is a very import ant tool now. the reason is simple, normally we have to manually adhust the parameter dials to achieve new looks or expresson, with trial and error, it takes time. But with the random MT py, it is very quick and easy way to get many random sample and part of them are very useful to save as spawn morph or fc2. I found the tweekValue is a key to the ramdom effects. so changing it may result in different combination of MT. Thanks to Bushi who enlighted me for the py.