Every ride I check the integrity of my sprockets. After riding yesterday in the mud (serious mud, poured 1.5" rain the day before), I noticed my countershaft was definitely a little more worn than it was before this ride. This is my first Ironman sprocket set. I've heard nothing but rave reviews about the rear sprockets, but never heard anything about the countershaft. Any experiences like mine? My chain was definitely not too tight.. do the countershafts of Ironman sprockets wear down any slower than other brands?