It looks like a Great Planes Super decathlon to me as well.
Look up the manual with the link SO4M posted above and set control throws up using that as well.
To much elevator travel can kill this plane.

Lots of bad press for this plane back in the day. People expected it to fly like a cub. It is not a Cub. The one I built flew/flies very nice. Knife edges like nobodies business.

Here is a couple pictures of one I built for my son along with a very short video.
Finished weight 6lbs 12 oz.



https://www.youtube.com/watch?v=qjm2mYY_fQc