I received my game a while ago and I just wanted to share my experiences with my flippers. First off, I am no newbee when it comes to pinball. I have been around since the early RGP days and rebuilt a ton of games, so I know what I am talking about.
When I first started playing I noticed the flippers were sitting very high on the playfield and they were also getting pretty hot and weakening over time. What I found was that the flippers were not sitting down against the bushings, but floating above. These flippers were not adjusted properly. This was causing friction between the plunger and the coil sleeve since that is what was causing the flipper bat to float. I adjusted this with the proper adjustment tool. I also replaced the return springs with the williams ones from a wpc machine. It was night and day, I had to turn the flip power down to 25, but I still think that is too powerful. I think my hold settings are on mid setting too and it seems to be fine for me. Well, that is where I am at with the flippers. This seemed to help a lot.