If I still had mine apart, I’d look at how the motor is mounted to see whether there’s anything obvious about how it can be moved, or whether it was screwed in place correctly to begin with, which seems to be an issue with these particular models. However, what Bruk has described is similar to what I had to do with my FEF-3 - although the adjustment was on one side rather than the angle. I did not apply a lot of force all at once and it took several efforts before there was even slight movement. Eventually it moved enough.
Incidentally, you didn’t specify what your motor problem is but I assume it has to do with the drive gears engaging properly.
