Shots up the right metal ramp fly off it and land in the back corner of the playfield instead of following the ramp.

Right metal ramp throws balls into the back corner: raise the ramp

Cause: The ramp sits too low on its supports, so it is not banked enough for the ball to follow the curve. The manual's ramp installation step mentions a spacer that can go missing.

Checks

• Compare the height of the ramp at the back with the plastic ramp next to it; it should sit a little higher.
• Check that the standoff and spacer under the ramp are present and the right length.

Fix

• Raise the low side of the ramp. Here, lifting the left side by about the thickness of a washer cured it.
• Refit any missing spacer called for in the manual.

Systems

• WPC Fliptronics

Games

• Twilight Zone

Related tips

• Ball keeps bouncing out of the Thing scoop: guide rail steering it to the side
• Eddy sensors: electronic ball switches under the playfield

Source: Pinball Repair help group!! (Facebook group)