Part of the task for today was to get the cabin heat scat tubes cut to the correct size and routed appropriately to avoid both the #3 exhaust pipe and the cowling. The challenge for this particular exercise is that in order to come around the exhaust pipe, the tubing interferes with the cowling unless it turns up as it comes off of the manifold and then out to clear the pipe. It won't do this without some kind of support, so I'm going to have to research my options. I'm sure there is some device that someone invented just for this problem, and, it's just money.