I have a 7C but this should help you out. You need to adjust the radio to fit the blade. Set your swash and blade pitches before you set the radio up. You will do this in the mode settings with your pitch settings and such. You can set the trims to a higher degree and then use the button trims for minor adjustments in flight.

Go to the e-flight blade cp thread on page 46 about 3/4 down the page. Someone posted his settings for the 9C there. A couple other guys on that thread have the 9C as well and can probably help with minor problems (or major as the case may be). One guy I know of goes by westwing. You might PM him and see how he set his up.