Stiffeners for rudder skin

[john morgan]

I did not order complete kit.I'm just trying to build rudder little at a time to see if this is for me. Anyway, when I ordered the skins i also ordered from Vans the stiffeners. I tried to order R-915 A thru H however their online program could not find my query so i ended up ordering R-00915 A thru H. The stiffeners I got do not look like the ones in my practice kit and don't match my skins. I'll call vans tomorrow but was wondering if anyone can tell this newbie what i did wrong. Is R-00915 used somewhere else and not the rudder.