I think it's the pre, the 3 Band in particular. It might be something else, but I've found every 2 band and every HH or HS I've handled didn't exhibit the missing G string problem. My Old Smoothie doesn't have the problem. The Classics don't have the problem. The problem is, however, real.
I had a fretless Ray and I sold it because it had a dead spot in the usual place, C on the G string. It drove me nuts. I can usually deal with a dead spot but on a fretless it's so noticeable as the mwah just dies. I recorded a track for a producer, and the C major sections of the track required playing on the C dead spot. I didn't want to play the C on the A or D. I ended up playing while pressing the headstock against the amp. It sounded glorious. I traded it in at Sam Ash the next week.
Yep, I can't believe I forgot to mention, I did install a Seymour Duncan 3 band in one of them and it sounded so much better.