According to JV Askem, there is a simple method for bringing up your OH press: simply do a few sets of 5reps working up to a max, but do them as 3 strict presses and 2 push presses. I tried it and brought my max OH press from 95x11 to 155x5 in 16 workouts using this technique...
(Note: I use the 75's only on my last set, and yes, I do use a spotter.)