I ran across one of Kiwi_Roy's earlier posts (http://www.v11lemans.com/forums/index.php?showtopic=12326&p=201362), where he measured various loads in these circuits and Relay#5 is carrying 22.5 amps.  No wonder Relays rated for 20 amps suffer there (and get hot). I have temperature readings on mine, so it may be an indicator if this higher rated OMRON runs cooler.   Thanks, Kiwi_Roy!