Great notes, tracelifter.
I tested with the BW bridge plastics off, but the ball was too wild. I found as long as I raised them (with 4 washers I think, whatever I could fit), it gave me the clearance I needed for nice smooth BW shots.
I'm also testing the Loki lights moved to on top of the hellicarrier on the left side of the game. Which clears the view of all 3 SHIELD shots and Ironman. With Loki moved there, he is in front of the red flasher, but you can still see the red glowing all around and behind him. I'm just trying to decide if its a good spot. I can't put him in the left corner like a Pro since there is nowhere to mount him and I don't want to make permanent changes to the game by drilling holes or something. I think the red flasher will be less important once my teseract mod has arrived, since that red flasher is used mostly during teseract.
I bought the replacement plastics for the Loki inlanes, from this thread:
http://pinside.com/pinball/forum/topic/fs-avengers-sling-shot-mod-see-your-inserts-clearly
Also, I moved the outlane posts in, and placed an extra one on the right side so there are no balls getting caught.
I also reduced some of the difficulties of the modes, like BW is now easy/easy, ironman is easy/easy. They still take a lot of shots to start and complete, but at least I have a fighting chance.