RE: couple of newbee questions....
Thanks for your help, guys.
I solved all of my problems, first I started landing on grass insted of a parking lot.
And thanks montauge for the tip on inverted engine "missing" just riching a couple of clicks solved the problem.
Also, I bought a master airscrew prop, and I've had approx 5-6 full flights including take-offs and landings with no visible damage.
Thanks again for everybodys help, I'm having no problems anymore! (Except that I don't have enough time (and fuel$) to fly!)