Thanks for the thoughts and suggestions everyone.

The only picture I can find is in the manual and the tips are very small in it. I didn't know Tower had a Scratch and Dent! They do have a wing for sale but it is missing both the center section AND THE TIPS. Making balsa tips is the way to go since they would actually be more durable and a lot cheaper. I am going to just trace the wing end shape and start from there eyeballing the picture of the outer shape if I can't get any more info.