Does anyone know how to remove the bolt from a winchester model 67? I believe it is a 1935-1936 model as it has no markings on the trigger guard, finger grooves on the forend, a chromed bolt and a petruding take down screw. The rifle has sat for about 30 years.The wood and the bluing are very good but the bolt is a little sticky from the old oil left on it. I want to get it all cleaned up and running smooth again. My Grandfather and I were the last ones to fire it and it was cleaned and put away after that. I don't remember the take down proceedure as I was 10 then. Any help would be appreciated.