As for upping the doses when the initial gains slow, I think it is a mistake. It is best to pick a dose and, except for frontloading, stick with that dose. That is because the initial gains are mostly water, and increasing the dose won't help you gain muscle more quickly than you are doing (assuming your initial dose is the right level for you).
Rather than increasing your dose, you should get your diet right, and if your gains stop, increase your food intake. So long as you are gaining 1 to 2 lbs of weight after the first few weeks (or after the first 4 or 5 weeks while using dbol), then you are doing fine.
Once your body stops responding to the gear (i.e. you do a cycle and don't gain noticeable muscle) then increase the doses on the next cycle or try something else.
