Hi all, I'm the electrician for a show running an ETC Express with various dimmer packs. The last one on the chain for Universe 2 is a Leviton 4 Pack and the other day all four instruments in it started to ghost. Fortunately it hasn't happened during a show yet, but they've turned on at least three times. If I turn off the pack, they all function properly for a period of time, but eventually turn back on. I inherited the space and dimmer packs a few months ago, so I might not be thinking of something fairly obvious. Thoughts? Thanks so much.