Good call Joe on TTIs. I always error towards low buck, even when there are things designed to make stuff easier or eliminate the issue. I guess I'm stuck in my old and cheap ways.
Same here because I take about 6 inches of header wrap and fold it over a couple of time and put it between the header pipe and the wires.
Solves the problem and about as cheap a solution as you can get if you already have header wrap anyway. :D