If there are any scrap pieces left over from the sbk that are large enough, you could build one from that. Or, even splice a couple pieces together, to make it large enough.Here's a progress update on my Tutor. I applied some of the decals that come with the SBK over an all-white paint scheme, and I do like it.
I still have to install the wing servos, motor, and electronics.
Unfortunately, when I was painting, I put the hatch a little too far over in my garage, and then ran over it later with my car ;-) I'll build a new one from DTFB.