The reason I am scratching my head on this is that it is isolated only to product page. I have tried custom mods and slides, but none show on the product page specifically. If I set it for product listings, categories, home, etc no problem.
So I don't believe it is a module problem. It appears to be more of something that I am not doing for a module to find the individual product page.
Maybe I am doing it wrong. I am setting a link to the product. Then going into mod and selecting that link and mod position. Is there any other thing you can think is wrong?