I would not be surprised if you could substitute p-aminophenol base for the Metol in the glycol mix. It is readilly soluble. It is probably the easiest of the Pyrocat formulas to make. Glycol, catechol, p-aminophenol base, ascorbic acid and mix. Warming helps the mixing, as the organic solvents do not have the degree of brownian motion (My theory) as water. PF can supply the p-aminophenol base. Phenidone is another option, which would make the glycol form of Pyrocat HD. It also is easy to mix.