Try moving your upper body less and instead moving your legs so your skis meet your hands. If you're doing a blunt grab, just bend your knees and your tails will come up towards your hands. This will prevent you having to reach for the grab and will save you from getting off balance.
"When you want to succeed as bad you want to breathe, then you’ll be successful"
Just do them when just straight airinfo jumps, then it will just come naturally and that wlrks with Every other grab, the first grab I've ever done with a 3 is trailing Japan because I was just doing them on every little side booter