when anyone snips the top off at over the 5th node--- next best thing to do is give it more light. 1 60w bulb is not enough anymore. you are starting flower when you open your girl up to the bright sky for more tops. you are trying to make more than 1 flower at the top by cutting it off aren't you? use another bulb now with your favourite 60w, then as your tops shoot up even more light as they grow. have fun.....it'l work with more light for sure.