Minn is right. Get a new spinner and some spare props. I would suggest a coupla 10-6 and 11-5 Master airscrew black plastic ones. That should work good with a 40 engine. If you have a 46 try 1" bigger in prop with the same pitch. That should get you going again. It is nice to have a few choices to try. so don't be afraid to buy a few different sizes and brands. It is nice to have a few to experiment with untill you find one you like. If you are above 3000' altitude I would go with the 11-5 first. Good luck.

Mark Shuman