Monoblock amps and REL Series R Sub-Base Systems, Revisisted

Has there been anything new on running a single REL-328 (or similar) with multiple (2) monoblock amplifiers since this topic was discussed back in 2010? I'm hoping to add an REL-328 to my current system which is running two (one for right channel and one for left channel) Marantz MA-500 monoblock amplifiers. I've seen numerous suggestions on how to connect this combination of components despite REL stating otherwise. Has anyone seen success with this over time? Is there a possibility of causing damage to the amplifiers?
Thanks