Hi, I've had a pretty good week so far at OCI. 8 interviews, 3 callbacks, 8 more to do next week. I re-read my writing sample I gave to these firms and it was really not very good and had one typo. I've found a much better sample to use for the firms next week, but should I try to substitute this new sample at the firms I have callbacks? Do they read the writing sample before making the callback decision or do they read it before/concurrent with the callback/offer stage? I really had some very good interviews with firms that didn't call back and was above their gpa medians, so I really think the sample took me out. Any advice?