Here is a thread for a burnpot mod on the Enviro multifuel units to limit the carbon buildup in the burnpot. Should give longer burns before the whale starts singing in there! Should also help with the center agitator post wearing too quickly.
Thanks Wachusett for the idea. Maybe Enviro will see this and upgrade or at least test this for future burnpot liners. We should send them a link to the thread once we get them dialed in!