Is this a common issue with these TLCs? What is it that causes my windows to go slow in the winter months? When I connect 12v power directly at the switch from my motorcycle batter it moves quicker but still labours on the way up. I can understand cooler weather can contract things but at +5C? The gears are lubed nicely and the track appears smooth. So what am I missing? I have blown my passenger window motor due to the extra draw it must have been pulling and I have to "help" the others down. In the summer their fine, slow but smooth.