chichester cathedral

coronation of the virgin. the mid c13 figures in the spandrels of the retrochoir gallery are poorly fitted against roughly cut backgrounds, yet the two figures here do have projections under each one. the background foiling here is the only one without foliate cusps, and the rather uneven fit of the stonework shows that these multifoil shapes were not cut out in situ. so why the weird blobby background and poor fit of the figures ?