I'll end with a little friendly jab at your profession in general. I currently work as an amusement ride mechanic.(heavy duty diesel before that.) The funniest thing for me to see is when an engineer can't figure out why something doesn't work as they thought it should, and the rest of us uneducated idiots explains it to them many many times till we just go right to the problem and physically show them why it didn't work and how to correct it. Happens quite often. Often enough that our in house engineer has come to trust us when we tell him that's not going to work. The best is with air and hydraulic systems. Yep on paper it should work. The computer even confirmed it. But out on the track it didn't pan out. Same thing here. I'm too dumb to explain it any better, that it just doesn't matter and the chain doesn't react how you think it should.