Prism Flashlight is discontinued. I ordered a 4D, because one dealer I called said that the Niknak was not a good outdoor kite.
I would send the 4d back and order the NikNak. Don't even bother opening it to try it out. I strongly believe the dealer was incorrect or misleading you to buy a 4d.
After flying my 4D a couple of months, I decided I wanted something bigger. I got a new Niknak, and flew it yesterday. It is a major step up from the 4D, you were right, I should have sent the 4D back, but I had already ordered it and it was on it's way. The Niknak is not twitchy at all, and just a smooth flyer.