Thank yous very much for your help. I will just submit the 19-page 1099-B rather than trying to fill out the form 8949. Honestly, I would not know how to fill it out. There was a wash sale in there somewhere, perhaps this is why I got the message from TurboTax to send in additional paperwork. There were other things that I don't understand. I don't think I would have been able to fill in the original tax return item-by-item because (i) there were so many items and (ii) it is not clear to me with my limited knowledge which items would have needed to be filled in one by one.
I will send the IRS the 1099-B (and also a 1099-B substitute I got from the same brokerage firm) and see if that works.
Again, much appreciate your help.
