Quoted from Atomicboy:Say goodbye to that impossible to get ramp if you keep using that spring.
Yeah, you definitely do not want to put in too much spring. If the ball has too much speed it will kill the edge of the plastic at the top of the vortex ramp. On my old pinbot I put a small foam square (same as used on standup targets - so not visible to player) at the end of the ramp to help absorb some of the impact from hard shots.