Yeah, last time I went, I did 2 sets of 20 and a last third set of 10 of everything with slightly heavier weight. I felt I had a much better workout afterwards. I'll cut it down to 3 sets of 10 then and see how I go.
When you say add and decrease weight accordingly, what exactly do you mean? Should I add or decrease weight after every set or what? I've usually jsut increased weight everytime I easily make it to 20 reps in one set.