To my knowledge there was no problem with the 2 speed rear diff 
 it did make the carrier a slight bit quicker and gave the carrier more pulling power for towing the bigger guns  
 As for the steering, the Windsor steers ever bit as well as the mark 1's and 2's 
 if not better  
 just my opinion after using both having used  both vehicles
		 
		
		
		
		
		
		
		
		
	
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