Can a balancing spool stop hot and cold
	
	
		I am having a problem with my shower and I am not sure if it is the balancing spool.  I was getting cold water but no hot, I put a new cartridge in it and the balancing spool was stuck so I cleaned it, put it back together and it worked fine for a few days.  It went back to having no hot water so I checked the balancing spool again which seemed to be fine and when I re assembled it I now don't ave any water.  Can a bad balaning spool stop the flow of both hot and cold water??  Thanks for your time