Hey fellas! Recently acquired a Pistol Poker. Really enjoying it so far. I too was having issues with balls loading when they were not supposed to during multiball. I had not found this thread yet or it may have saved me some time. I eventually did figure out that the outhole coil was very strong causing the balls to “jump” the release coil bracket thus allowing balls to enter the shooter lane when they were not supposed to. My solution was to fashion a simple bracket that sits over the ball 1 location in the trough. This makes the area above the release bracket to small for the balls to fit through thus stopping them from being able to jump it. This has fixed my multi ball issue. Bonus to this mod is with the existing wire that keeps the balls from falling back to the outhole, the Playfield can now be lifted with the balls still in the trough with no worries of them falling out. I forgot to take a picture of it, but will at some point and post it up.
On another note, does anyone know if there are any cliffy protectors out there that will work on the scoop holes on the upper Playfield?