I own the game and have the exact same issues. If I am not mistaken, you need to change the spring on the plunger to a stronger spring. Regarding the Black Panther shot, it’s a difficult shot to make without have the ball bounce around which then slows it down. Experiment with pitch and make sure it is level.

Mine had the same problems too. Was never able to figure them out. I've played other games where the right orbit works just fine though. I was advised to make sure the little 'ramp' in the shooter lane wasn't pressing against the right wall of the right orbit but mine wasn't

It seems to be difficult to dial the plunge on this machine. I had issues with my auto launcher being wildly inconsistent and tried to bend the auto-launcher bracket so with the ball at rest the bracket arms are centered, it tends to work a lot more than it used to but it seems to come and go. I've never really had manual plunger issues, but I would make sure that the plunger rod is centered and that the rubber shooter tip is seated properly on the plunger rod. When I unboxed mine, it seemed like the rubber tip was too long so it wasn't going onto the plunger rod all the way and then getting kind of shifted to the side after a few plunges and then not hitting the ball squarely.

My Black Panther shot was really clunky and often airballed. After looking closely and using my phone's slo-mo video to see what was happening, it turned out the metal ball guide (on the right side of the shot) wasn't a smooth curve, it had something of a kink in it and the ball seemed to hit right at that spot and jump around. I removed the plastics in the area and the shooter lane metal ramp thing and was able to bend it smooth and now it has been super consistent (when I can actually hit the shot). I had a similar issue (but less severe) with the Hulk orbit shot as well which I tried to do the bending thing to. I didnt get it as good though because Im going to need to fill a screw hole and very slightly move the hole to allow for the proper curve.

I assume you are also talking about the ball falling off the wireform before getting to the right inlane? I have that issue on occasion, but I havent really dug into it yet because it's not really repeatable. Otherwise, I'd again use the slo-mo video feature on my phone to see where the ball starts bouncing around on the wireform. I had an issue like this on another machine, but it was consistent and I was able to see the ball going around a bend in the wireform and kind of riding onto the "wall" of it which gave it alot of bouncing action, I was able to bend the wall a bit to keep the ball in place and I dont think Ive seen the issue since.