Re: IBANEZ RG-770DX pickups ????
The 770's had F2's in the neck before they came out with the F4. They showed the F1, F2, and F3 in the '89 catalog, and the F2 is in the neck position of the 770's and the 540PII. Then for the '90 catalog they started showing the F4. I'd really like to try an F4 personally, it's described as a PAF Pro with a little more lows. Anyway, the guitar should have an F4 but I imagine Ibanez used whatever they felt like at the time. Maybe the factory ran out of F4's for awhile. The pickups were made in the USA, so if they ran out it would take a while to get more.