Quoted from Craig:What have you done to improve the frequency with which you are able to hit the Delta ramp successfully? I have waxed the playfield, lowered the angle, rebuilt the upper flipper, put in the (slightly) stronger coil, tried adjusting the gap between the flipper and the side panel, etc. I still have to hit that shot perfectly to get the ball to go all the way around the ramp, and I think it might well be impossible to get enough velocity for it to go over the hump and into the Borg ship. Any thoughts about what else to try? I am at a loss.
I'd say mine gets there most of the time but it does have about a 30% failure rate as well. Just a thought here but, if your ramps have some rough track marks, that could cause some drag and slow the ball up. You could try flame polishing them. I noticed a difference after I did mine, not huge but it was there.