Quoted from Robotworkshop:My early Williams Blackout has a metal bar and I think my other games do too. That's why I though it was odd that Flight 2000 didn't have one and I thought someone may have removed and lost it.
I guess Stern didn't think it was needed and left it off.
O.K. One needs to go back in time...
When game manufactures are making money... they can afford to put quality into there products.
Top earning game manufactures from the 1970's --- early 1980's
#1 Bally, games made money they where on a role.
Close behind,
#2 Williams, same as above but they had a few stinkers.
#3 Gottlieb, they lost being top ranking game manufacturer and making what ever they can to stay afloat.
--- They were bought by Columbia Pictures and they put money into the company...
#4 Stern, they used like Bally system... but quality was crap... cost cutting everything.
#5 Game Plan, same as above...
List below, basically, have one it wonders.
#6 Zaccaria, made a quick splash... hard to get metric parts... odd displays...
#7 Atari.... some odd parts and odd system.
#8 All other odd manufacturers, cocktail tables etc.etc.etc.
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Stern only has a hand full of really good games that made money.
They were broke... thus Seeberg manufacturing bought them out.
The entire coin op industry collapsed at the end of 1982.
Top three manufacturers above would survive... others bowed out and closed their doors.