I am combining beans and my clean grain elevator/bin auger is getting a build up of dirt that is binding the grain and causing the belt to slip and stop the system up before the light alarm system comes on. I have not had this trouble all year until i got in this one particular field in which does not seem much wetter than the other fields. I had just spread biosolids before i planted it but the soil looks just like dirt and nothing else. Watching my son combine, it does not appear he is picking up much dirt but evidently it is enough to build up around the edge of the auger housing in the bin. Has anybody else had this trouble. Is anything worn out? My belt is also real loose. Is there a way to tighten the belt? Any thoughts would be appreciated. Thanking you in advance!