SQL Server - getting past CXPACKET

Working to figure out what is causing issues with a parallel query.  Query should finish in 9 seconds and took 2+ hours.

Looking at query wait times in DPA all I see is CXPACKET.  This describes the wait times of the main consumer thread.  But it does not tell me what the 8 producer threads were waiting on.  The producer threads are doing the actual work.

How do I find the wait states and times of the parallel query producer threads?