Picked up Williams Upper Deck project. Have game working but balls get stuck at exit of pitching flap from time to time and seem to be slow. When mixing unit has magnet on ball will get pulled behind bat and cannot be hit. Been all thru pitching motor which is correct and moves with no restrictions. Have removed playfield flap which helps but balls still can get stuck right at playfield and do not come out. Seems they bounce around as the arm sweeps them thru the guides. Ran pitch motor with no balls and appears it at 68 RPM best I can measure based on 10 continuous rotations. Any suggestions would be great

This was a video I found on You tube while looking into issue. While not my game the pitching looks similar and at about 2:30 into the video you see the ball get stuck right at the outlet which is what mine does. You can continue to pitch and at some point 2 balls will come out.

The game does have a mixer unit and from what I can tell it either turns on a magnet under play field for a 'curve' ball which in my case since the pitch is so slow it pulls it on back side of bat so can't hit it or it adds a resistor into bat circuit to make bat weaker.

I will take a look for your previous post

Tried game without curve magnet and no different. Looked at schematic and curve magnet is on 110V side of system and controlled by mixer unit to turn it on and off. Mixer also has resistor it puts in series with bat coil to provide weaker swing. Balls look newer and tried each one around the pitching arm an no magnetic effect noted. Removed the top flap off game and watched pitches. Seems balls bounce around on their way out and do not stay on the guides and will even not make it out with top flap off from time to time.
So wonder if balls bouncing around in guides as arm moves is just slowing them down but guides look pretty good and not sure how to ensure they are adjusted correctly.

Mine do as well looks the same. Seems like balls coming out of pitch asm on side and don't run on rails to the tip at play field

Does any have a good pic of how the cams attahed to the pitching motor. I had mine rebuilt by PBR, sent in with cams on it and think I have them installed correctly but want to double check. Want to confirm two wheel cam and which is inner or outer cam as well as which set screw goes on the flat. would like the same info for the pitching arm and where it should be at start of pitch sequence since it also has two set screws.

Thanks

Got it figured out and game working