Having taught Jr Dev every year for the last 10+ years there are a few things that never seen to change.
At least 1 out of every 10 kids who slalom have TERRIBLE bindings. Usually the problem is the back binding is way way way too far back from the front boot. Sometimes it is the fault of a ski manufacturer and sometimes it is the parents. Regardless of whose fault it is if your kids rear toes are not within an inch of the front boot you are making skiing harder in your child. ¼ inch would be best.