Bell / Ringer checkup

[audihere]

I've read the bell ringer on S2000 games might be muffled a bit.  Mine sounds really crumby so I took it apart to see if there's anything obviously wrong with it.

Is anything on backwards?  The plunger isn't too smoothe feeling.  The spring is much stronger in one direction.  The plunger hits the bell towards the left side of this pic.

[audihere]

I plugged the solenoid back into the power harness and used the menu I/O Output test to run the bell pulsing.

I can see why the bell doesn't make much ringing, the plunger doesn't really have much movement/power.

Does the orientation and spring setup look correct in the above pic?

The other thing is that it seems like the coil sleeve  (if there even is one) isn't providing smooth motion for the plunger.  Normal??