Pinball Rollover Switch Slot Protector

I recently picked up a used Stern James Bond Pro pinball machine, and every time a mode would start via the right inlane post, the ball would stay stuck. I added a regular Mylar protector around the slot, but it didn't help. I was considering ordering a stainless steel slot protector, but in the meantime, I figured I'd try 3d printing something to see if I could address the issue quickly. 

I was surprised that there wasn't already something like this out there, but I whipped it up in Fusion in no time, printed it in TPU, and it has worked like a charm, so far.