Not sure if this is what you mean by lift gate but I had a problem where the entrance gate at the bottom of the ramp for Ironhide came off the switch that I’m pointing at with my index finger. Which caused the controled gate not to open up on the mini playfield I’m pointing at with my pinky finger. The ball would stay up there until ball search. I needed to take the entrance gate (Double U looking paper clip thing) off at the bottom of the ramp and bend the hinge closer to the ramp wall to keep it from popping off the switch when the ball would fly through it at high speeds. Is that what you mean?