I really need some help.No matter what I do I can't get the catapault to launch.All my status messages say that sound was found that the connection to FSUIPC is correct.I slew to the proper position lower flaps adjust pitch arm the catapault hit the throttle and no matter what setting the hold control is on the plane starts to roll forward slooooowly. I wait to spool up the plane bounces a little than I release the brakes no sound no catapault no nothing crash into the sea.Can someone please help me with this

Are you setting the parking brake before Shift-F9?Matt

Yes Is that correct or not?