I bought this chipper used in 2010 and it ran like a top for the first 8 years mostly in the winters doing tree work throughout a golf course. Outside of when I tested the chipper out before purchasing it has never really been used to chip anything over 6 inches in diameter. In the past 2 or 3 years we have had issues with the auto feed not working consistently. More or less it has been an intermittent thing. More recently it has developed an issue where the feed wheel moves at such a slow rate the first 30 to 60 minutes that it runs that it literally spits out saw dust instead of chips. It does not seem to be related to outdoor temperatures as i have experienced this on cold days as well as warm. It has had a complete service with oil and hydraulic filters and fluids changed. Are the 2 issues related? Any ideas what would be causing either or both? When working on the original auto feed issue we did replace the original auto feed board but it didn't fix the issue. Any help is greatly appreciated!