Hmmm? I was thinking of pushing water up from the block drain and see if anything comes out from the opposite direction.
You could use a wet/dry vac and suction out from the wp hole.
Have you tried 'sort of' reassembling the broken pieces to get a sense of how much you're missing?
Performing at the Comedy Cove--595 Morris Ave. Springfield NJ reservations 973 376-3840
A recent set