I will put my 2 cents worth on on overbuilt. I started putting a lot more mass in my bows a few years ago. I worked for me because I was crowding the tiller into the center limb area. Last year I started using the same wider limb design and spreading the tiller out more and got some mixed results. My handshock picked up a lot, performance went down but still good, reliability went up. If you use all that wider limb you don't pay too much of a price for it but if you have a big wide limb that is not working it will cost you. When I get home tomorrow I will post a good example of a heavy overbuilt bow, It is my current broadhead champion bow and by far the fastest self bow I have ever owned. No skinny tips, no skinny nothing, no handshock either. Working area of limb is very small.