Ted, I'd absolutely second the idea of using Harman's mailer. A number of us saw the process in 2008 at Mobberley and it was impeccable.
Others here on APUG have said in the past that HP5+ and I suspect FP4+ negs always give the look of an English summer. For that read " produce what appears to be a low contrast print for those used to much more contrasty sunshine producing more contrasty prints.
For what it is worth I prefer your first two prints to the "adjusted versions" The third could do with a little more contrast but only a little.
Plenty of shadow detail and I suspect most of the tones in the shots were the middle range of grey tones with little white or black.
I don't think you did much wrong