Thanks a lot.
The jump thing is good news to me. =)
For the attack trick, hold A when you pick up an item (or hold any attack button), then c-stick left/right and quickly let go of A. I have Z set to grab also. I usually have Attack on my free shoulder button to do this, but now that I'm assigning Jump to it instead, I'm hoping Z will work just as well. Try it with A or a shoulder Attack button first.
This tends to be very effective versus ROB. Steal his gyro and you can float all day and aerial combo (you don't throw when you aerial while floating), and at the same time, you can also space on the ground with fsmash. You lose jab, utilt and dtilt and usmash/dmash, but to nullify one of ROB's basic approaches/mindgames (smart glidetosses) and an annoying projectile, it can be worth it. He might even try to throw out another gyro on instinct, even though you have it in your hand.
And of course, you can throw or glidetoss the gyro at him at any time. You're not committed. You can throw it up and do things and then recatch it too. And finally, he'll be in the "she-might-throw-it-at-me-!" mindset the whole time. It's pretty good.