I know this is pretty subjective but how often are you guys generally rebuilding your flippers?
I bought my Paragon a little over a year ago, and rebuilt the flippers with all new parts shortly after.
Today the mini flipper locked up after playing a few games. I lifted the playfeild and I could manually move it but it was binding pretty bad. I tore it down...the coil sleeve, and plunger linkage were filthy, but otherwise looked in decent shape.
I cleaned everything up well, polished the plunger, put in a new coil sleeve and spring, and cleaned/filed the EOS contacts while I was there, and it works great again.
The other two flipper mechs look equally filthy so I'm going to give them the same treatment.
I played the crap out of it for the first several months after buying it but it's slowed down to probably only being played about 10-20x/wk.
I was just surprised the flipper mechs already looked so dirty, but maybe that's about average time a rebuild lasts?