I've been reading posts here for awhile now, but now I have a question maybe some one can help me with. I own a 2015 3039R open station that I use to maintain 26 acres of partially wooded, partially grassy land. I use it mostly with the Bush hog, and some with a box blade. The info center on the tractor was showing engine hours at 39 and soot level at 77%. It finally went into regen, but only dropped the soot level to 70%. That's not right is it? My calls to the dealer have gone unanswered. Won't even call me back. Any help will be appreciated.