Decided to start another FMAR build this week and took more photos of what I do to the chassis while building them. Hope you enjoy! I like to use tape to give myself a guide while I cut the chassis. Makes it somewhat easier to cut straight with a dremmel. This is the finished product after cutting everything and cleaning up the rough edges with a plastic specific file and exacto. This is a little trick I saw on a YouTube video from Dribar, the World Champ does this to his FMAR setups. They split a piece of carbon and half and glue it on the sides of the front of the chassis to stiffen it up after you cut it down. FMARs are prone to break near the motor mount due to the increased weight in the front. Detailed photos showing the pocket I cut out to accept the CF The next three photos show the Flex you achieve by doing these chassis mods. A lot of builds in the Tamiya Racing world rely on trying to make chassis Flex when they land, giving more room for error on a jump.