Hi Langless28,
I also had a problem with the ball coming off of the ramp, because the ball was ejected onto the ramp at too high of a velocity. So I simply placed a 2” strip of double sided scotch tape high up the ramp right where the ball enters the ramp. The stickyness of the tape is just enough to decelerate the ball to where it tracks the rest of the ramp and no longer flies off through the banked curves.
Every now and then I have to put down a fresh strip of tape, but it is such a simple fix. Also, you don’t even see the tape, because it is transparent. I keep the roll of tape near by; behind the coin door.