Help with Magneto level up team super with frank

Ok, so when i’m down to my last 2 characters (Frank and mag), i try to do a team super (cart + rocks) and snap a pic while the rocks are still hitting. But they often fall out or jump out.

Does anybody else try this level up? if so, whats the trick?

Wouldn’t a whiffed dhc from ST work better?

Well, my team is Tron, Frank, Mag…so when tron dies, i need a level up trick with frank on point.