I have a Brison 4.2 in a Weeks solution X ,the engine runs very good, the plane flies great!, but every flight something is breaking, the tail struts, tailwheel springs, and most of all, the cowl is breaking apart everywhere. I believe I have the strut and tailwheel spring problem solved, but that cowl is turning into mush. It is the wood cowl, I'm thinking about a fiberglass cowl and soft mounts if it would help. I've been down the balancing road already, prop, spinner are fine, i'm running a Mejlik 24x10 and getting between 6700-6900 Rpm's. Any info would be appreciated.

Two recommendations I have is to fiberglass the inside of the cowl as well as use fuel tubing as washers to retain cowl and canopy screws. Do you fly from a rough field? What you may have to do is change your approach and landing habits. I learned to fly with a Sukhoi which was very heavy. I use to fly at the AMA field in Muncie so most if not all of my landings are smooth but at a high rate of speed. I run out of room on most fields. What I do now is compress tubing on the axles to act like a brake. It helps but I still run out of runway from time to time.