Has anybody heard of transferring to a different state guard or reserve after being QRB retired from the ARNG?

And have you looked at AGR? Guard Tech? Reserve Tech?

And were you speaking of going ARNG or ANG, as opposed to going into an SDF, per se?

http://www.sgaus.org

This is the main body for the non-Natl Guard state defense forces (SDFs), look to see if there's one where you are, or nearby, if you'd wanna move there...I'm afraid QRB, as an acronym, escapes me, if you'd care to elaborate at all, I'd be curious as to the meaning, obviously.....

Ah okay, so you want to transfer from one state's national guard to another state's national guard, not into a state defense force. It really depends on the RE code you get, which I'm guessing would be a RE-4 in your case. As SGM Jeff Mccloud stated, G1 can approve a waiver, but it is unlikely. That's likely why recruiters are dodging the question, it's a complicated process that most of them don't really want to deal with.

Now, there are also "state guards" in most states, which are basically reserves to the national guard. They have more lax enlistment standards since they're non-combat, and sometimes take those with medical history and RE codes that would preclude you from federal service. They serve in an unpaid capacity until activated by the governor of their state for state active duty, usually in response to natural disasters like flood, hurricanes, earthquakes ,and tornadoes.

EQRB means that the Soldier is no longer eligible for service in any component: Army, Army Reserve or Army National Guard. It comes with an RE 4.
That said, it is possible, but not at all likely, to get a waiver from the Army G1.
Each state does have a state military reserve, a volunteer (unpaid) pool that is run by that state's Guard to augment their mission with people that can assist with SRPs, training, etc.