technical support : our experienced technical support engineers are available to answer your questions, giving you peace of mind knowing the help you need is there when you need it. and the valley thermometer also gets warmer during the day – 5.6 below zero was the high in the valley, and 6.3 below zero was the high yesterday on top of the hill. i would suggest that instead of doubling up on backing (also doubling your backing cost) you keep a few different products in your shop. i think i look my best in black tie. 