Thoughts on Jack Nicholls riding?

Thoughts on Jack Nicholls riding? He seems to follow orders.  Errors.  Nuff said. On zooks hes cantering but letting himself lose position... ... I was watching...they were willing to lay 9 and 10/1furlongs out when he was just sitting on it.   But I have noticed that when Billy L has ridden Zooks he's had it in first 5 or 6 and brings it wide.   I noticed j.nicholls on another horse at Newcastle a while back....  just watch in future.   Of course the Williams stable is to be obeyed until the given day.