Right now, I'm looking for the theoretical ideal hopper-emptying times for settings 1-9 for my 25-PDVC. (40lb hopper) I realize that the feed rates need finer adjustment to get the burn correct for any given pellet brand. But, knowing my ideal target times will be a good place to start. Suggestions for Englander: 1. There should be a comprehensive feed rate chart in the manual with columns based on average pellet size, since there are now so many different pellet brands to choose from, all with minor differences. This would give everyone a baseline setting for getting started. 2. There should be an overall feed-rate adjustment procedure in the manual. 3. Lastly, there should be an additional second layer rotating fine-adjustment restrictor plate with a max of 80% restriction for use with some of the finer pellet fuels so that they don't overfeed and form a lava-clinker. The plate only needs to be rivited to the free end of the lower course restrictor plate that's bolted down. Then you could just put a solid rod straight up through the pellets, in the middle of the hopper, with a handle that sits just low enough to that the hopper door doesn't hit it. Then restrictor plate fine adjustments could be made "on the fly", no wrenches and no emptying of the hopper needed to make the adjustment. I have to say that I'm pretty pleased with the overall quality of this stove. It actually kept about 1600sq ft of house at comfortable temps through that last cold spell.