The upper and lower flippers use the same circuit on each side, so is the upper weak too? If not I'd examine the EOSs again or check for mechanical issues.
I upgraded mine to Vid's specs and don't have any problem with the left ramp. But that's why some people don't do it, because it was supposed to be a challenge.
What angle is the pf set to? If you have it cranked up, it won't make it.