I HAVE BEEN WORKING ON WATERFALLS ALOT THE LAST YEAR OR SO AND HAVE BEEN HELPING SOME FRIENDS ALSO. I CAN SHARE WHAT I HAVE LEARNED. FIRST OFF THERE ARE AFEW DIFFERENT WAYS TO DO A WATERFALL AND AFEW DIFFERENT ENTRYS AND EXITS.IT SOUNDS LIKE YOUR PLANE IS SETUP OK BUT DOUBLE CHECK YOUR CG. WATERFALLS LOVE AN AFT CG. THERE ARE TWO TYPES OF WATRFALLS THAT I SEE ADD PERFORM. ONE IS VERY FAST AND TIGHT AS THE PLANE ROTATES AROUND THE TUBE AND THE OTHER IS SLOWER AND MORE DRAWN OUT. THE FAST ONE IS FAIRLY EASY TO GET STARTED BUT HARD TO KEEP GOING FLAT AND TURNS INTO A KNIFE EDGE SPIN ALOT. THIS ONE IS OK TO START WITH BUT DOSE NOT REQIRE ALOT OF SKILL TO DO. TRY TO START FROM A HANGER WHEN DOING THESE. FULL DOWN AND FULL THROTTEL.THEN GUIDE WITH RUDDER AS THE PLANE GOES ROUND AND ROUND AT A PRETTY FAST PACE. YOU WILL NOT BE ABEL TO STOP THIS ROTATION VERY WELL AND DEFFINITLY NOT BACK IN A HANGER LIKE I THINK YOUR TRYING TO DO. THE SECOND TYPE IS SLOWER AND THE PLANE ROTATES IN A BROADER ARCH. THIS ONE ALSO REQUIRES THROTTEL MANAGMENT AND MORE PRECISE RUDDER AND ALERON CONTROL. IN MY 35% CARDEN EXTRA(LIKE THESE GUYS SAID THE CARDEN GUYS ARE GREAT TO TALK TOO) I USE 35 DEG. DOWN ELEVATOR TO DO THIS, NOT 45-50. AGAIN FULL DOWN AND FULL THROTTEL BUT THIS TIME CHOP THE THROTTEL ON THE BACK SIDE THEN GET BACK INTO IT ONCE THE PLANE IS COMING BACK AROUND AGAIN. THE PLANE WILL LOSE A SUBSTANCIAL AMUONT OF ALTITUDE ON EACH FLIP AND WILL LOOK LIKE A TIGHT LOOP WITH THE TAIL SLIDDING AROUND BEHIND. YOU WILL NEED TO FEED RUDDER AND AILERONS TO KEEP IT FLAT. THESE ARE THE ONES THAT YOU CAN STOP ON A DIME AND HANG ON THE PROP AGAIN OR TRANSITION INTO A HARRIER. THEY ARE VERY PRETTY TO SEE DONE RIGHT AND CAN BE TIMED TO STOP THE LAST FLIP AFEW FEET FROM THE GROUND. IF YOU WANT TO SEE THEM DONE BY A PRO GET FRANK NOLLS VIDEO, THE ART OF 3D. THATS HOW I LEARNED TO DO THEM SLOW. HOPE THIS STUFF HELPS. GOOD LUCK.