mjg, morning.... Looks like it got warm in the smoker..... I would suggest, putting the smoke gen on the lowest level and putting a big soda bottle above the gen... have it 3/4 full of frozen water... the ice will reduce the heat effect of the soldering iron and smoke.... Keep the top vent wide open for heat to escape.... It's a trial and error thing... just like most smoking.... be sure the electric burner is off also.... Jack cheese seems to melt at lower temps than cheddar melts too...... Daub the sweat off the cheese and vac-pack for a few weeks in the refer to mellow... Dave