I would be highly skeptical of Maui Mods. (I have had to sue them to get a piece of prepaid gear returned.)

Kyle of Reference Audio Mods recently did some work for me that was incredibly high quality "non-BS" oriented. Much of what he did for me was improving the power supply of the unit in question. I'd suggest giving him a call. (I know others on this Forum are skeptical of mod services in general, but I was very happy with the consultative solution development and the implementation.)

DirecTV HR21, Ram modded Oppo 93, JRiver MC17 on Win7 wi/SSD, Empirical Audio Ultraclock Offramp, 861v6, Bryston 28B SST2 amps, Salk 12" Soundscapes with Dueland caps, RAM modded Audyssey Balanced Pro, Lumagen Radiance, MarantzS4