I'm hoping someone can help. I have a Stern Black Knight Sword of Rage Premium pin which I purchased brand new last Nov. I have it in my home and don't have many plays on it, but the issue I'm having is the upper playfield flipper. When you flip, the flipper is slow to go back down. I notice this if I'm playing for a little bit. I check the flipper spring, coil sleeve and everything looks great. I noticed the way Stern has this flipper set up it's a long rod from the flipper down to the flipper coil. I can't seem to figure out why its return back so slowly. If I let it sit for a bit and play another game later it seems to work fine. I made a video of the issue, but can't figure out how to post it.

What do you mean by make sure the clear upper playfield is all the way down? Are they known to come up? On the flipper adjustment do you mean I should just loosen the flipper shaft and just raise the flipper slightly from the playfield?

One last question because the shaft on the upper flipper is so long does it need to have any type of lubricant on it? I only ask because the flipper will work fine until about 20 minutes of play and that's when you start seeing the issue.

Thanks for getting back to me.