Could some stars have intrinsic red shifts and be mistaken for quasars? Here's two examples of a quasar with a so-called "foreground" star. Could these perhaps be a binary star system with one of them having an intrinsic red shift?
Image on the left here:
100,00th Hubble image here:
It might be worth revisiting these to see if there's proper motion between the quasar and the foreground star.