I am trying to program an old LGB 55020 decoder - in particular, I am trying to change the max voltage to the motor.... which should be CV5.... but no matter what I program CV5 to, it still takes it up to 24 volts at the top end.  
 
Does anyone know if maybe the 55020 didn't allow programming of CV5 ?
	
		
			
		
		
	
				
			Does anyone know if maybe the 55020 didn't allow programming of CV5 ?
 
	 
 
		