I have a solex carb in my landy that freezes at the drop of a hat. To solve the problem I usually lay two lengths of tartan blanket (very traditional you know!) along the edge of the bonnet, between it and the wings. This gets the air intake to draw warmer air from under the bonnet rather than from the cold gale that otherwise blows through. I was just wondering if anyone had a more elegant solution? (I have thought of household draught excluder but it does not look up to the job and it would require several thicknesses to be laid down).