If it's not going too far off topic, I can offer a formula for MYTOL, a Phil Lewis act-alike to Xtol. This is from Jack's Spec's site, when there was a Jack's Specs site.
Sodium Sulfite................60.00 g
Sodium Metaborate...........4.00 g
Sodium Ascorbic..............12.00 g
Phenodine........................0.15 g
Sodium Metabiosulfite.......3.00 g
I would not recommend E-76. It is a perfect example of a formula where little consideration of the unique properties of ascorbic acid has been made. I would suggest either the Xtol formula or DS-10 both of which are on APUG. I have used both and they are very good.
i tried e76 with fp4 last week and it worked fine at 1+1:very fine grain, good tonality and vey sharp. i took the liberty of adding 1g of potassium bromide to reduce chemical fog.