use hht, it fixes all the reflexives for you, all you need to to is extract and inject. You can get hht
here. It's also in the halomods file forums, but they're not loading for me at the moment.
[edit: i see, you would like to see how to do it manually, i suppose you coul do that, but it really would not be worth the effort, there are tuts out there now on how to make a collision model for your models in the hek, and they would come out perfectly]