Quoted from Ed731:1. How the heck do you get at all the flashers on the backside of the PF? Only 2 work!
Pop the playfield up about halfway and hold it, now here is the tricky part. You have to reach blindly behind it there is a little board back there with the flashers, there are two wing nuts one at each end, remove those. You also have to unplug the board. Often times traces get burnt out on the board so test continuity with your dmm to see if each light is getting power. Otherwise you may replace with all new bulbs put it back in and find that some do not work.
Quoted from Ed731:2. I saw on a post somewhere that the dome lights were in a Service Bulletin and they are not supposed to work? Non of mine light up at all.
Are you talking about the beacon lights on the very top of the backbox? Those should all work unless something is wrong with yours. The service bulletin refers to the top two flashers at the top of the playfield right beneath the horseshoe loop you make to raise the bonus. Unless you happened to buy an early prototype chances are that when you go look you will see two clear domes and there will not be any flashers, not even sockets for flashers.
Not sure where to best direct you on how to troubleshoot #3 and #4. You may want to start a new thread for your problems, people tend to ignore older threads. I would start a new one and make sure you choose tech help for the group