Its a fun game with a lot to shoot for. Being a Gottlieb, there is plenty that can go wrong with the boards. Installing the grounding mods can help and finding a game with them already installed is a bonus. The center plastic is often broken and hard to find. These games can have problems with pop bumpers. Pretty easy fix as each pop bumper has its own driver board and these are only about $20 each.
https://www.pinwiki.com/wiki/index.php?title=Gottlieb_System_80#Ground_updates