I have a new dewalt 13" planer and I am having hard time getting it to feed reliably. The wood is pine which has been air dried for 2 years. The rubber feed rollers are getting covered with sawdust/chips and will not feed the board properly. Every 2 or 3 boards I have to wipe the rollers down with paint thinner to remove the dust which must have some pitch in it. Is this normal? How do sawmills feed green wood into their planers? Also the boards are getting small (<1/4" diameter) scooped out gouges in them. What is causing this? Thanks for any help.