I ordered a Shred Stixx Piranha from a dealer based on videos, descriptions, and recommendations from others. I get the board in and it only has 3 fin slots. Everywhere online the board is discussed as having 5 fin slots.

I call the dealer and they tell me that the 5 fin was just a prototype and that the produced model only has 3 fin slots. I put some calls in to Shred Stixx but have been unable to get through.

Can anyone shed some light on this and how many fin slots this board is supposed to have or is the company I bought from trying to pass of an old model to me?