I’m trying to learn 4A.
Been practicing for about 3 weeks now, and can catch the yoyo on almost every throw.
However, no matter how hard I try, the yo-yo won’t bind back to my hand.
I’ve have watched every tutorial out there, but still no luck.
I’m a solid 1A thrower, so I can bind, just not when throwing 4A.
What could I be doing wrong? Does the fact that I’m left handed make a difference?
Any help would be great! 
what yoyo are you using? you need responsive for 4a.
What yoyo are you using? If it’s a 1a yoyo, your gonna have trouble binding because the gap is so large. If it’s an adjustable gap yyj, try tightening the gap to make it more responsive. Try using the yoyo for 1a, if it’s really unresponsive or semi unresponsive and you don’t have an adjustable gap yoyo, try adding some thick lube.
The yoyo is a flying panda and it’s responsive
those might help.
pretty much all you do is bind how you would with 1a. just flick the string into the gap.