Quoted from Whysnow:Ramps are all solid so little concern.
Plastics are crap material and will break but that is pinball. Easy to scan and make new ones.
LCD screens are an off the shelf part
CPU and code is available
I really think the ONLY part of concern is the I/O boards (node boards) on the underside of the pf. I looked them up and one time and you were able to find spares but I honestly cant remember where and I think things changed from original Alien to current run??? That is the one and only part I would try to find spares of currently. I guess you could get a back up CPU if you are concerned also.
To me, everything else if fixable or makable if needed in the future.
the node boards alone would make me not want to own one. with a company you can't buy replacement parts from. See how well a Stern with spike system is to fix if you can't order a replacement node board anymore. Might as well throw it in the garbage by that point. The company that makes machines with boards I can service myself is the company that gets my money.