Me and my boy took the 80 to play on our local hill and she was cutting out real bad once I had it at steep angles. Would start lunging and bucking if I held the skinny steady. Any thoughts on what I should be looking at? I do have a full tank of fuel.
I'd bet you have a torn air intake hose. The big rubber hose between the air cleaner and the throttle body - they're notorious for getting brittle and falling apart. I'd bet the engine movement as you are on the hills/angles are opening up the cracks and causing your rough running issue.