Sensor IQ Breaker/Relays

We received our stage lighting upgrade a couple of years back.   We are now all LED, our old dimmer rack was replaced with a Sensor IQ Breaker/Relay panel.  All was good until ETC recalled the breakers/relays last year.  After we had them replaced with new breakers/relays they sent.  Sense then we have had 4 of them fail in the on position, and had those four replaced a few weeks ago.  Now two of those have failed in the on position.  Working with our ETC installer, they are telling us this is a know problem.  Has others had this problem.  Any one know whet is being done to salve this issue?   I don't like having to call the electricians in every few weeks to replace the breakers/relays.  

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