Quoted from Mad_Dog_Coin_Op:This is the official Stern fix. It doesn't work for everybody.
Post #2518 VUK fix Posted by Pozzest01 (3 months ago)
I don't blame you, I wouldn't do this either. I fixed this problem on an 'on location' machine about 6 month ago with tie wraps and it worked flawlessly ever since. I did clip the tie wraps for neatness when I was done, I took the photos attached photos to document how far off the bracket holes are.
20200125_152114 (resized).jpgpasted_image (resized).png
I noticed when removing the VUK that the holes did not line up with the support support bracket; out of curiosity I tested the VUK with the screws out and it worked perfectly! This told me imminently that Stern mounted either the VUK or support bracket in the wrong position and is a great way to test to see if this fix is going to work before doing anything else.
At that time I decided to just leave the 2 screws out and used tie wraps to secure it to the bracket to keep the VUK from vibrating when the coil fires.
IMO a possible permanent solution would be to simply mill the VUK bracket holes into sloted holes so they line up with the threaded holes in the support bracket; then just add a couple flat washers to the bracket when putting it back together and call it done.
EDITED: To correct quotes and attached photos.