I've been using my Series 80 since 1984 and it has never failed to go bang for me. I've changed out the plunger several times whenever it starts to get battered around the inside edge where it rides the FP.
It's not a bad trigger. 4.5 lbs and smooth. Early on I polished the back of the trigger and the disconnector. The very first time to the range with it I had mis-assembled it, with the trigger leg of the two piece actuator in front of the trigger, so it did not function.
It's a good idea to keep a couple extra plungers and springs around for it. Beyond that, I wouldn't worry about it and just shoot it. It's a good system.