Just got an EBMM Stingray, 2010 2 band standard, 11inch neck radius. Played it though an amp unaccompanied and was great. Then played over some songs I'm learning and the G just didn't cut through. I had no idea this was a Stingray issue so Googled it and found lots of posts, including this one. So I watched the video about adjusting the pole pieces and it worked!
Removed the strings. Removed the pickup casing. Lifted the two pickups a little and put a screw driver under pickups resting on the body. Pushed the E, A and D poles down, moving the screw driver next the the poles being pushed for support. They where stiff so needed reasonable force, pressing with thumb. Left the G pole alone. Put E so it would be flush with casing when put back on. Raised A and D so they would be 1mm (ish) higher. Replaced casing and adjusted screws so E pole is about 3mm from bottom of E string and G pole 1mm from bottom of G string. All strings now well balanced.