Its ok to use cheater plugs. Your innerconnects will ground the system. Krell covers this in their owners manual. I would prefer to find the offending loop and remove it. It can be a trying process to say the least.
Or you can just cut the ground pin off. Ouch! Thats what i've done with the amps in both my systems. Floating the ground is really not a big deal. Many people do this a never have a problem with it. I've done it for years and I leave my stuff on 24X7.
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