Milliput is a nice product, i think nobody can deny this point. Yet, it is not easily to find, take my experience as example: I have make model for over 15 years, and seldom see milliput in model shop.
I also tried to seek this from website, yet they seems have no post service to my city....
So i recommend to use super sculpey, or epoxy from tamiya, if you are unlucky enough like me....