You will not get a new top bud growing where the old one was. What will happen is that the side shoots will start growing more. The top bud puts out a chemical (auxin?) that keeps the lower buds growing more slowly. When you picked the main bud, you stopped the production of the chemical. Now you have a "free-for-all" among your buds to be "top bud". However, because it is late in the grow, they may not get that much bigger, even with the topping. Don't put her under 24 hours of light. Might cause her to hermie. - Granny:hippy: