The original kit had balsa tips built on. If you can get a hold of the plans from the kit version that will indicate the easiest way to rebuild them nicely. It would take longer for me to try and explain it here then it would to actually do it, so try and get a look at the plans if possible....or even the manual for the kit might help. That I know you can download from the GreatPlanes site. Good luck. I had one of those for a while...it was a very nice flying plane, and very stable. I always said I wanted another one, and still do, just not enough time in a day or year.