Eagle eye image locater (1 Viewer)

has anyone ,or is anyone using the Eagle eye Image locater.I have quite a problem trying to keep the birds in sight esp as they keep moving around,and then have trouble re loacating them once the focus is adjusted etc.i use the Eagle eye adaptor,but would like to get to grips with the Swar one which goes with the scope.I have lost a couple of screws from the Eagle eye,and am finding them difficult to keep turning etc in time to catch the image.Does the Eagle image locater,restrict the Swar adaptor,ie the collar which fits over the eyepiece as in the diagrams shown the Image locater seems to be in the same place the Swar adaptor fits.Hope this makes sense.
Any info would be appreciated.
Thankyou,Christine.