Timeline is awful. Had one and hated it within a few days - too easy - weak rules.
Right now, I have Star Race and James Bond 007 - like and play both often.
90% of Sys80 pins have after market boards, because the original boards were never ground protected--and are often shot.
Re-pinning is almost always necessary in some capacity.
Other troubles are common too with Sys 80's, sadly.
Spirit is the top of the heap, but good luck finding one.
Black Hole, Haunted House and SpiderMan are the common 3 top in demand.