I am in the process of rebuilding a REALLY old (Built around 1900 or so)one horse grain drill.Typical fluted feed on seed box,with fertilizer box,five single disc openers,wood boxes ,built by I THINK avery for monkey wards.Its all pretty much straight forward as far as fluted feed mechanisim goes , almost identical to JD types except for two piece cups.The problem I am having is there seems to be no feed gates,nor does it look as if any were ever fitted.since I was rebuilding this to take to shows and possibly demonstrations,I was wondering what would happen if it didnt have any gates?Has anyone ever used one without gates?also why couldnt i bend a piece of tin the shape of the feed roller and put it inside box on back side of feed roller then i could adjust it forward and back for larger or smaller seed with a slot and screw setup on bottom of wooden seed box instead of having a swinging type of gate on outlet side like a jd? think it would crack too much seed?