No you don't need to re-hone the motor. Feel around the edges of the port see if there are any sharp edges very seldom will honing take out the factory chamfer unless the bore is really worn. The dis-advantage of a straight hone is if you have high and low spots the hone will ride over it and not hit, that is also it's advantage because you can see the high and low spots and how out of round it is. The biggest dis-advantage of a ball hone is it follows all of the bore it will not high-lite anything out of round or high and low spots. If you are worried about the edges of the ports hit them with emery cloth to knock down any sharp edges and make sure you clean the block really well. Especially the ports because the shavings will build up in there from the honing process. I personally never use a ball hone on 2 strk motors.