ORIGINAL: formula_51
...a wider piece of hardwood and cut it to fit the fuse slot then offset it to fit the engine...
I do that all the time. The lite-ply doublers Sig ships on most of their profiles isn't very good either. It will compress down very quickly and become oil soaked much more readily than a 5-ply hardwood. I'd think about at least replacing the piece on the engine side of the fuselage with better material.