Replicator 2 Fan Duct replacement

Yesterday, my fan duct broke off during a print and spent some time in the company of the hot end before I could recover it. I then had to attach it with tape. I thought I'd better model a new one before this fell off again and was no longer usable. I'm afraid my model may not be as accurate as I would like in the melted area as I never studied it prior to the hug with the head, so I don't know what it should look like.