I got poo-pooed a few years back for saying this but
when I used to repair pins we used to cheat a bit
to get more life out of the flippers. if ya' take out the flipper
plunger and link assembly that slides in and out of the coil sleeve,
you may see a mushroomed tip on it. That would make it stick. Now most people would just go out and buy a new one. We would file it down on a 45 degree bevel so it hit slid into the coil better. But, check for that mushroomed tip at its end. If it got played a lot I bet it's there, and probably sticking at the coil sleeves end when it makes its exit.. Also the sleeve too since its plastic if its cracked or split at the end that too may cause a flipper to stick. And if you do have to replace the entire left coil may as well do both so both flippers are the same strength. Yes, buy the right side one too. It's like a cars headlights, ya' change one ya' should change 'em both,
so one ain't stronger than the other. Now I say poo-pooed for filing it may weaken
the shaft but we never had problems due to filing it. Also we had many pins out on locations and in a bar with dozens of irate (i.e.drunk!) patrons ya' have to fix it quick!
Oh those big springs the plunger return ones I think they're called. please don't oil them. it just attracts dust and then the dust sticks to the oil making for dusty goo!
If it is working properly they just bring back the plunger after the coil shuts back off.
so oiling them may make them stick too eventually after months or years of oily dusty buildup.
See the company I worked for bought another company's business route, and when their pins started to come into our shop (I was the main pin guy), I saw dozens of pins oiled where there should never be oiled and fuses made out of paperclips! Long story there fun to watch my boss over ride me though that day and just plug it in blind! But check it all out looking at the other flipper for reference if you get lost rebuilding it all again! It has many parts, many people I talk with think, oh a button a rod and a flipper. I wish it were that simple! and if the buttons are leaf and not micro switches have fun keeping them clean every fifty hours of play time with emery boards between them then paper to clean them up a bit Flippers are fun, since they are a complete mechanical assembly inside the pin which is the other mechanical assembly or monstrosity depending on your mood!
Okay this is long enough but you get my drift I hope...
