OK, I nuked a couple of posts. Please keep off the personal jabs and stick to the topic, modeling.

Jokes and barbs are OK, just keep it lighthearted please.

On to the topic, have you played with or changed the incidence of your plane yet?
And, who did you purchase the plane from?
Are they willing to take it back?
Have you tried the max battery or motor available yet?

Answer a few of these, and perhaps we can narrow down a solution for you.

Good luck,