Thank you for your reply. I have been through the Bowmar catalog. I have found the dog handle but not the part that glues to the hatch. I have emails out to Bowmar and TAG. So far no luck.
Earlier this year I was contemplating replacing the entire hatch assembly, and contacted Bomar. I spoke with Tracy West, @ Bomar Customer Service (603)-826-5791. She was very helpful - maybe contacting her directly will get you some different options?
She provided me with part numbers, an order sheet, etc - as I said, she was quite helpful.
As I look back through my notes, I have a reference that the handles are no longer bonded to the lens (as they call the opaque white panel). They may have changed the design and parts may no longer be available? Let us know what you find out...