RZ5424 about 15 ys old.  Runs fine.  Had a fuse blowing issue first.  Which led to lots of new switches and parts thrown at it.  Two things. Release brake engine stalls, engage pto engine stalls.  Has to be a safety switch issue. Tested them all good.  By passed seat switch.  Engine runs well, hoping to get some assistance with a clue or two as to what to check next.  Also, bench tested the PTO clutch it checks good with the multi meter and the 12-volt check.  What am I missing?
	
		
			
		
		
	
			
			 
				