After I had it together and running, I realized I didn't use anti-seize. The nuts came off no problem from the original header so I figured it should be ok. I don't plan on taking the new header off lol
+1 to the heat cycle, plus, if you put new crush gaskets on (like you should) then those will also soften in the heat cycle and crush farther, so you'll need to re-torque to spec for that very reason as well.
Mine were way loose when I went back to check on them, but I got lucky. I went about 1000 miles before I checked them.
2009 Aprilia Tuono - Ginger
2001 XR650R BRP (Big Red Pig)
2006 Honda 599 - Ex wrecked it :-D
2007 Honda CB900F (sold)
2006 Honda VTX 1300C (sold) YouTube Channel