I have a Woodmizer LT 40. I was cutting white pine yesterday for a costumer with a new blade, bimetal 7 degree turbo. The one White pine log that is about a year from when it was cut, kept getting waves in it where the knots were. Now I have had this issue before, but never this bad. I kept milling slower and slower, it didn't seem to make a difference. The costumer was not happy at all, nor was I. Any ideas as to why this was happening?