JavaTom: THanks, I get an Error when trying to align 'right side' of the two walls on either side of the bay window thing.
""One or more of the objects could not be moved into the desired alignment due to placement restrictions."" , but they are aligned!! Measured from the same point, they give equal dimensions
If I highlight and remove the circular piece(bay window), and extend one of the remaining walls, the gap disappears and I have a solid wall, so those two walls are in alignment, but the minute I put the curved wall back in, it messes things up