This is 115 stove adjustment info that was taken out of the manual.

Be sure to scroll all the way down to see everything.

To make sure the stove will work correctly in varying conditions, it is sometimes necessary to adjust the air to fuel ratio of the stove. The trim pot knobs also need to be adjusted during the initial setup of the stove. Two Trim Pots accomplish this. To gain access to the Trim Pots, the left side panel (facing the stove) is removed. The Trim Pot on the right is the “Feed Rate Adjustment Knob.” The Trim Pot on the left is the “Exhaust Fan Adjustment Knob.” The Trim Pots are used to adjust the air to fuel ratio of the stove for varying conditions (length and angle of venting, composition of the corn and air density). The Trim Pots both have a range of plus or minus 30% from the preset rate. The following page will explain how to adjust the Trim Pots for varying conditions or problems.

Too Much Fuel

If the fuel in the pot is building up (getting higher in the pot than it should be), then the most probable cause is that there is either not enough air or there is too much fuel in the Burn Pot. The fuel level should be about the same height as the lower burn pot, during the first few hours of operation. Too much fuel will cause excess soot on the door glass and in the exhaust. If this is happening on all levels, then the feed rate Trim Pot should be turned down. Each notch is 6% of correction. The Trim Pot should be turned one notch at a time and run for a full dump cycle before the affects will be seen.

Not Enough Fuel

Another thing that can cause a build up of fuel in the Burn Pot is that there is not enough fuel. Unfortunately too much fuel and not enough fuel end with the same result, too much fuel in the Burn Pot. If there is not enough fuel, the fuel in the pot will burn too quickly, leaving only a small amount of burning fuel and a small flame. The fuel will still be dumping in at the same rate and not all of the fuel will be lit on fire. Eventually the corn that is not on fire, will catch on fire. The excess corn will create a larger than normal flame. The excess corn will be burnt up over time, since the stove is running in a lean condition. This scenario of not having enough fuel, will usually oscillate between a flame larger than it should be on that level and then back down to a small flame, before it gets bad enough to build up in the pot. This oscillation usually takes five to ten minutes per cycle. So if the flame gets very large, then very small, this is probably a case of not enough fuel. As corn is delivered to the Burn Pot, the flame will drop slightly in size and rise back up again, this is normal. Do not confuse this with the condition of not enough fuel.

Too Much Fuel? Not enough Fuel? Exhaust Leak?

To distinguish between having too much fuel or not enough fuel, the stove needs to be monitored prior to the build up.

If the Burn Pot slowly builds up with fuel, then it is probably getting too much fuel in the Burn Pot. The flame will also be slightly lazy and not quite as vigorous as normal.

If the flame oscillates and burns up most of the fuel in the pot, it is probably because there is not enough fuel in the Burn Pot. Half way through startup the stove will usually have a pretty small flame if this is the case.

I like to adjust the stove on the #1 level.  After about 40 minutes after you pushed the start button watch the flame it should be at the top of the deflector or just above it.  When it feeds corn the flame will drop down and about 1/2 way to when it feeds again it should come up full height.  If it starts to drop down before it feeds corn you need to turn the feed up 1/2 mark. See pictures below.