I recently purchased my first pin, a Gottlieb Waterworld. I ordered the flipper repair kit from PBR and finished rebuilding both flippers the other night (thanks for the guide Vid). The kits do not come with rubber grommets to cushion the plunger link from hitting the mounting plate as it retracts from the coil, and the game's manual does not show or reference one in any place that I can find. The mounting plate has a hole in it where it looks like the little rubber plug would fit right in, but neither flipper actually had them installed when I bought it, so I do not know that for sure. I asked a buddy of mine who has several William’s pins about it and he told me that all of his have them (shown in the picture below).
So, my questions are, is there supposed to be a plug mounted in this hole? If so, would a standard B/W one fit it? Thanks in advance guys.