You guys might wanna try it with the neck pickup turned so that the wire is coming off the high e side(tapped normal wioring uses neck-side coil).. IN other owrds, the oposite of the way the come in a Jem.. This is the only way I've ever heard this pickup..
I have no trouble getting harmonics with my Breeds, but I use a very bright amp setting, a fair amount of chorus, and have no tone controls in any of my guitars. :P
In fact, this is exactly why I want to get rid of my PAF-pro, it's too bright in my setup, and sounds thin, almost to the point of single-coil.. It sounds great through my J-Station practice set-up, but through my amp it doesn't get the warm lead tone I'm used to from the Breed neck or AirNorton in my other guitars..
I also have no problem squealling with the Super 3 in my other guitar, and that pickups seems to have enven less treble than the Breed.
You guys might wanna think about disconnecting the tone control in the Breed loaded guitar, or upping the pots to 1 meg.. That might add the treble back in that seems to be missing...