I'm not entirely sure what you mean...
First, I think you mean BA2166 and not 2772 (which goes to JER), second when you say you're booked in CW but it's sowing you as seated in WTP, which row is it sowing you in? You do know CW is 2-4-2 as well right?
Looking at Expertflyer I can't see anything abnormal about the seating except that First is being used for CW.