cold weather edelbrock

Have the heat stove hooked up but I would like to build a better one for my heddars,all cold air entrances blocked in rad support,stock 4 bubble cleaner for winter,doesn't appear to be icing(my aspen R/T did that alot in Nova Scotia winters,the damn thing would be solid ice some days.I am wandering if I should remove my phenolic spacer and run a thin carb gasket.