Dragon,
I'm building a Great Planes PT-40 right now, and the instructions have infact called for using wing seating tape. I would think, that even if your instructions didn't specificly say to use it, you should. Having the fuse balsa (albeit covered) rubbing bear on your wing just seems evil. Besides probable slippage of the wing.
The tape is probably and all around good idea. If you don't have some, you can get it, and everything you need, at
www.towerhobbies.com . I've delt with them for getting all of those little parts and most of my tools for making this kit. They missed something in my order (a trim sealing iron), but the instant i called them they had it out the door and on its way to my place. And they even let me keep the box of #64 rubber bands that came with my order by mistake

.
Good luck and no matter how frustrating things get, remember that it's a hobby and you're supposed to be having fun with it

(has had to chant (dont get pissed, it's just a hobby, don't get pissed [sm=lol.gif] ......... by pure ignorance i screwed up my radio system royaly [&:] )
Cheers,
Rob