To me it sounds like what you are looking for will not be found in that plane, no matter what you do with it. Fix it, sell it and start building something with a little more kick to it....something like an Extra or an Edge. In the meantime, you need to gain more experience and you can do that with the Dolphin.
From all the posts I've read from you.... sounds like you would be more satisfied with a plane that is capable of 3D and is Very acrobatic. These Scale planes like the Decathlon, cub....etc are just not gonna cut it.

just my 2 cents.