Fix offset computation
Fix offset computation

magnusmorton/pycket,pycket/pycket,magnusmorton/pycket,samth/pycket,cderici/pycket,samth/pycket,cderici/pycket,pycket/pycket,magnusmorton/pycket,samth/pycket,pycket/pycket,cderici/pycket