Recently however , there has been a ongoing strike at Renold since September 2009 , which supplies the gearboxes for Alstom 's propulsion units , so delivery is expected to slow down a bit until the strike ends .
Recently however , there has been a ongoing strike at Renold since September 2009 , which supplies the gearboxes for Alstom 's propulsion units . 
 Because of this , delivery was expected to slow down a bit until the strike ends .