I've got a Zac Em called Monnflight that I've had for about 3 1/2 years.
Comsetically its 9 out of 10, but reliability has always been 3 out of 10.
Play 3 games and it breaks down, fix it , play 5 games and it breaks down .
And when it broke down it was always 3 or 4 faults, not one.
So I finally bit the bullet and have just finished giving it a full mechanical overhaul.
I've even now got the double bonus feature working, that has never worked since I got the machine (finally understood the circuit from the schematic and traced the fault to a switch out of adjustment) .
Even had one score reel not resetting that ended up being not one, but 2 dirty switches in the same circuit .. one on the reel and one on the reset relay.
Now only got one EM left to overhaul (Spanish Eyes) then my 2 x SS machines need fixing (and thats when I'll be asking you guys for help
)