I don't have an F1+........I have a G1+. Close enough?
Those days, the rock on the end of the upper level Lab Series carts was better than what is offered today on the Silver and Gold. The newer multi segmented cantilevers are better though. The F1, like the G1 will have 700 ohm motors. I'm not sure of the coil configuration on the F1. The G1 has silver coils. I have swapped out the G1 stylus and used the Z2+ stylus in it. Sounds pretty much the same (the Z2+ is nude mounted like the G1+) I like the sound (stage) of the older bodies to that of the Z series and prestiege series. The G1 stylus in the Z2 body sounded just like the Z2. The 8MZ stylus in either the G1 or the Z2 body is an improvement. As I said, I prefer the presentation of the older bodies compared to the newer bodies. Putting the Z2 stylus into my Signature 8 bodies (one is 8MZ body) was a backwards move.