Three20: Change the CGSize of a Thumbnail?

I was wondering if there is a way to set the size of the Thumbnails in in the TTPhotoViewController from the three20 framework? So far I found out, the images need to be 75开发者_运维百科x75 px while I'd like them to be more of a rectangular shape i.e. 60x75 px....

Thanks in advance!

Refer to this question and answer here Says which classes to extend and methods to override.

I dug deeper into the framework and eventually found the responsible class for it. Will do that earlier next time.....