Shapeshifter on "1953 Gottlieb Grand Slam playfield....PLEASE HELP! yes, I am desperate"
Monday 4 December 2017 at 10:39
Your lane guides look fine - they just need cleaning and polishing 
And presuming the backglass is an original, it looks superb for this title.
And presuming the backglass is an original, it looks superb for this title.
Source: http://pinside.com/pinball/forum/topic/1953-gottlieb-grand-slam-playfield#post-4106273