Hello It seems like i am getting a lot coming through the return. Where would i adjust to help remedy this? Combine has a air foil sieve. Also have quite a few untrashed heads in the grain tank, ive closed the cyl down to 1/8th inch and sped it up to 1250rpm. Doesnt seem to be cracking, so im wondering if i should tighten it up a bit more? It is a farily small and light swath (18ft) im wondering if lack of material is causing the untreshed heads? I drove faster but seemed it was throwing too much over. Any help with these issues would be greatly appreciated. Thanks in advance.