Ah, thanks for the info, I thought I heard earlier that 1035 was on its way back, so I was assuming that was #9 on the way back, with 1031 being #10.
Also, the last few rebuilt engines have been kept down south after testing instead of going north and staying up there for a while. Only engine up north (and as far as I know, it hasn't been down south yet) is 1032.