Does anyone know where I can get my hands on some of the shorter fin extensions, the ones that come with the platty, for my Transcend?

Just take them off completely. It rides best without the fin extensions at all. IMO

Sorry I can't help out. I gave mine away about a month ago. There have to be more Platinum / Fineless riders out there with extra fins. <BR> <BR>But, I do have to agree with Mike. It really comes to life with the fins off. It's wicked fast and smooth.

Yeah I rode it this weekend finless for the first time and it felt great, much better than with the stock long extensions, but I thought I could use a little more bite on my toe edges and wanted to try out the shorter ones.