Hello all: I will be helping a friend get his combine adjusted for his first run on corn.. ( my corn so I will help ) It is a White 8600 and in fairly good shape for how old it is. Shedded most of its years. General advice is welcome and specific advice if anyone has run a White in corn. Same as Oliver I am guessing. It has a 4 row 30inch head on it. First question is a general speed and opening for cylinder in corn? It was run last Summer on oats and did a fairly good job. I have a hand held RPM checker.. This corn is getting fairly dry now and its typical sw-mn yield. Thanks for any & all advice. ag..