My friend and I both have Pulses, and both are powered by TT 46pro engines. My plane balanced with no weight needed (to my surprise), and my friends needed some tail weight. It is no big deal that a plane doesn't perfectly balance as built, requiring either some nose weight or tail weight (or some shifting of batteries etc). Some modelers go to unreal lengths to shift weight so that NO WEIGHT IS ADDED ANYWHERE, but I have never felt this was necessary as long as the added weight is not excessive (the only time that an extreme amount of weight was used was on a Tiger 60, which required lots of nose weight).

You will enjoy your Pulse, it is a nice, easy flying plane, that can be very relaxing, and yet capable of aerobatics.