After carefully routing fuel line and power cables a couple months ago, I grew concerned about exhaust pipe interferences. The concern became acute as I looked at pictures of other peoples installations.... ummm... I think I have "something else", pretty close to that...
Sure enough, most of the FWF wiring/plumbing to the engine that I had done, had to be undone! URRGGGG. I had to quit and go mow the lawn instead!! Better to take it out on the lawn then the airplane! Lesson here is, don't follow the sequence of the plans!! Hang the big stuff, then fill in with the little stuff.