Couple of questions to help get an idea of what's going on:
How thick is the Grizzly top?
Did you take the plastic sub base off your router?
Is the depth bar unlocked so the router can fully plunge?
How deep are you chucking your bits?
Are the router handles hitting anything on the underside of the table (you may have to remove them)
If the top is very thick, a simple solution could be a router bit extension.
__________________
Doug
1 John 1:9
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