The bmi ballast barrows were the E135s.
There also could have been an issue with the nose wheel tiller, insufficient downward pressure and the nose wheel steering inop happens if turning the handle.
The reversers were fitted on a couple of leased machines but were neither trained for or use mandated as the brake wear was considered higher. Carbon brake wear more when cold and reverser use reduced warm up.
Either way, i will be interested to note the findings. The crew have been hammered on duty hours lately by all accounts...thanks to EASA