Why not just leave out the flame trap?
[Response: Editor] The flame trap prevents any engine backfires from reaching blowby gases in the crankcase, which would otherwise cause catastrophic results. It is an important part of the engine and must be left in place. Since cleaning it is not hard, there is no reason to remove it. [Inquiry: Stuck Flame Trap] In the Volvo dealership where I worked as a tech for quit a long time, what we did to get the flame trap out was take your screw gun and shoot a small screw partially into the center hole in the lil bugger. This gives you a handle to pull it out with and makes it very easy to change. Otherwise you’ll screw around all day trying to get it out.
