I have the Social Bookmarking by swguy mod installed and it works on all of my products that are type, "Product-General".

However, the products that are of the "Document-Product" type do not display the social bookmarking.

Examples, this product shows the bookmarking links,
this one doesn't.

How can I fix this?

Thanks in advance... I've posted in the support thread for the mod but the thread is old and not viewed very much