I have GT5P but there isn't a way to setup custom races as far as I know. Its just luck of the draw unless there was a update?
I have not been online for probably a month to check.
I'm good to go right now got XP booted and the Wifi running. Downloading it now. I really wanted the playstation store to have 2.40 so I could download it from my computer since it seems to download faster.