Hi to all,
Hi MIPS,
Congratulations! on getting your Grundig working.
About the EM84 bargraph magic eye, suspect a drift upwards of the 470K resistor & any high Ohmic value resistors around it.
Happens very often & eye misbehaves.
Does the AVC voltage have a healthy swing between on-station/off-station at the eye tube grid.
Note: EL84 is the audio output tube, was a typo in your post i guess.
Best Regards
jhalphen
Paris/France
EM84 typical schematic below.
Tube data on French forum:
https://www.doctsf.com/lampe-em84/l31