The BD-4 has had many mods advocated during it's lifespan. Longer wings, metal wings, landing gear, the changes are numerous. Today I accomplished one if the simpler ones advocated by Don Hewes. The brace in the tail section that supports the tailwheel and helps prevent damage during harder landings. It requires welding, and I've got a great Tig welder and have been putting together metal for the last couple of years. Here's today's effort.