Installed cliffy mystery hole protector and eyeballs coffin overlay on my met pro this weekend. Also gave it a good wipedown cleaning with novus1 and some cotton "tshirt" rags i picked up at lowes. I was beginning to see some ball trails in the loop around the top of the playfield. As well as some down near the flippers and in/out lanes.
Installing the cliffy protector was a snap once i got that small post to the top left of the hole off. Simple nut and washer on bottom but the clearances on both the top and bottom made that a pita for me. I dont know why the post had like an extra inch of threads on the underside... Hehe.
Just a simple wipe down was noticable in gameplay. Ball is a ton faster now. Only had the pin for two months and it was NIB. Hehe