I will check with my friend to see it the bar is the correct bar for the size kite. I didn't know that bandit bars are made specifically for the size kite. !
The Bandit 4 had different lenght of the safety line for each model. That was the only difference. The B5 and the B6 don't have this anymore. Just try to move the yellow stopper ball further up as advised in the thread I posted.