Hi sj3cub! Welcome to the thread and thanks for the comments.
In the past, I, as well as many others I know, have run 5 cell unregulated packs without any issues. But, I have also seen on two separate occasions where standard duty servos went up in smoke because of a fully charged NiMh pack that was run unregulated. One Futaba 3003 and one JR 517. Granted those were older servo's. I think you hit the nail on the head when you said "quality servo's rated at 6 volts". Just want people to be aware that a 2 cell Lipo or Life battery at full charge is much more than the 6.9 or so volts that the other packs put out. I tend to err on the side of caution and follow the manufactures ratings and either run high voltage servos or a regulator on my 5 cell packs to 6 volts just to be safe.
