LP, you are right. The 'Carlos Fandango' (Datum) switch stays firmly wirelocked in Low. The reason for this, is that after certain 'modifications', selection of High would give the F3 an unacceptable power advantage over the Typhoon.
Now we wouldn't want that, would we?
Advo
PS- 101 Dry - 8400lb 103 (With 106 Compressor) Dry - 9400lb. Max RH (ISA Sea level) 17,600lb.