I've been trying to contact Bob Zola of Mojo Racing Products for some time now, PM & email, with no luck. I was able to get a couple of Sport 20 turn fins and now I want one for my PT Stealth 45.
Is everything OK at Mojo?
He has had supplier problems with the fins, said they will be back in stock.
Goto David Preusse for good turn fin for sport40 also. his contact info in the setup pages.