Hi Mike,
To make sure I understand you correct, is this your method of work?

To prepare a (set for 10 litres) part A and B for later use:
1) dissolve the part A in 1.5 litres warmed polyethelene glycol (pure, or do you add watter also?) - and store this mix.
2) dissolve the part B in 4.0 litres - and store this mix.

To develop one film in stock solution:
3) take 45 ml of A and 120 mL of B and enough water to add up to 300 ml solution.
(This way I can develop 33 films with it.)

Why do you develop in stock solution and not in 1:1 solution?
And what type of film did you use it for? Also Ilford FP4+?

Thanks,
Bert