Quoted from LTG:That plunger assembly is worn and traveling too far and sticking on the end of the EOS leaf blade switch. You can see the 5/32nds allen head bolt has major wear around the washer area.
Time for a flipper rebuild. New plunger assembly ( do them both ) new coil sleeve, new coil stop.
Vid1900's write up will help you.
https://pinside.com/pinball/forum/topic/vids-guide-to-upgradingrebuilding-flippers
LTG : )
This is key advice. The first time I had flipper problems and got pointed to this thread, I felt lost, alone, and scared. But the instructions are actually great, the advice invaluable, and once you get your head wrapped around it you'll want to do this to all your current and future pins. I do, and nice rebuilt flippers are a huge +++ for all games (because most games come with really worn flipper assemblies).