My Plug Check At 30,000 Miles
 

I check my plugs every 10,000 miles. I study them closely, if nothing wrong, I clean them, check gap, anti seize threads and dielectric grease on the tops, and run them. Today, again, I liked what I saw.
Yep, I'm running them. If it aint broke, roll with it.
103, SERT, A/N Big Sucker, Power Duals, SE255 Cam, Factory Original HD Plugs, dyno'd.
Rear plug on the left, front plug on the right in pics.
Pics are BEFORE cleaning.

https://cimg0.ibsrv.net/gimg/www.hdf...5cd8d1f866.jpg

https://cimg5.ibsrv.net/gimg/www.hdf...ad2b762ea3.jpg

https://cimg8.ibsrv.net/gimg/www.hdf...b581d60305.jpg

Got a good clean burn going for yourself there. I wouldn't change a thing either.