Hi
It's normal that the coil turn a little bit and also have space between coil and metal parts who hold it but not fix it (move 1mm up).
This pinball need to be at perfect 6,5°
(sometimes eared about people who level down their pinball due to speed...dumb). And also adjust the outter gate who bring the ball into the ramp.
If fuse always blows, you can put an upper one but just 1st upper value...when there are too many balls in some ejector like the lower left, it can blow fuse.
Have fun