This is my second CMP Zero so I knew it needed a lot of weight up front. I desided to build up the cowl and firewall area with some Fiberglass to strengthen up the front. When we were done with the cowl it weighed 1.5 lbs and feels like it is as solid as a steel door. I also used 3/8" plywood and cut a new cowl ring from it. There are five layers of fiberglass on the inside of the fuslage nose area. All of that fiberglass added to make this Zero a lot stronger then the original one. After doing all of that and installing a RCG 50 for power I still had to add 6oz of weight to the front of the cowl to get it to balance at 6"(155mm). I hope this answers your question?