I don't know about the Bosch saw, but I have made inserts using plywood
or mdf for a Delta contractors saw. Use the old insert as a pattern.
First bandsaw out slightly larger and then use a router in a table with
a pattern following bit to cut to the exact size. You will probably
need to build a jig with hold down clamps to safely hold the patten
(old insert) and the one you are cutting together. Use small screws to
adjust the height. I presume the tabs you are talking about adjust the
height. Somewhere in this group I have seen someone post a message with
a link to a website with pictures.
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