Aside from string issues (installed twisted, just a bad E out of the box) or any mechanical issues (nut slots, bridge, etc.) and the fact that for now the low side of the pickup is fixed in place, I'd try lowering (if necessary) the treble side until you have equal space between the E and G strings and the top of the pickup and just see IF that reels it in. Do this pressing the E and the G down at the last fret, and just match the gap over the E with the G side.
See what you hear then.
PS: Use the RIGHT screwdriver.
See what you hear then.
PS: Use the RIGHT screwdriver.