Most of the beloved pinball games by Williams are just made of crap.
How many broken boulders do you see on every WH2O? They are made of the thinnest plastic in the world!
How many broken dragon wings do you see on MM? Again just crap.
How many broken spiral ramps do you see on games like Comet? The plastic is maybe 1mm thick. I doubt you could make it any thinner if you tried.