One of the common games with plunger and Auto Launch issues is NGG. That game has such a climb to get the ball around the curve of the ramp that it takes everything that plunger spring has to get it there. One of the typical problem with W/B manual plunger/Autolaunch games is the plunger hits the Autolaunch pivot. This can cause a weak launch with both the Autolaunch and the plunger. The other thing that happens with W/B autolaunchers is the striker only hits one side of the ball causing a weak launch.