Regretably, the ebay mount is incorrect. The factory mount uses 3/16" steel to form the hat shape that the rubber is installed into. I believe the listed mount is made by Anchor Industries/Westar and is made of 1/8" steel. The top hole is also incorrect if memory serves.
I believe the correct way to do this is to rebuild the original mount with the Anchor Industries "insert", I am just not sure how to do this and afraid I'll damage the original mount in trying it without direction?
Help anyone?
Astrobuf