[Closed] Shimano XT M772 rear mech help needed please?

I have recently bent an XT rear mech and have replaced it with a new one and new hanger.

Everything is working fine except when I try to go into the lowest gear on the back (large sprocket).

The jockey wheel is too near the sprocket and is skipping and not running correctly.

I have adjusted the B screw as far in as it will go but still need 3 or 4 mm more movement to bring the jockey wheel down.

Apart from trying to find a longer screw, does anyone have any helpful ideas on how to solve the problem.