HI have an old topflite kit P47 that I am completing and I notice the wing has a build in twist at the wing tip. What is the purpose of this on this wing. At the root rib on the trailing edge you use an alignment stick sarts at 5/8 and tapers to 1/4 at the tip...

Would this be considered washin since the tip of the wing trailing edge is twisted down instead of in an upward positon.

Thanks for responding