My Channing 3 had me on the verge of trying a stick of dynamite trying to get it lit after my first mid-season shutdown/cleaning. I went through 5-6 'bag' mice to no avail, highway flares, and a cheapo handheld blowtorch. All failed. The flares only succeeded in plugging a couple of air holes with the hot liquid they produce so I had to drill it out after it cooled.
After reading one of the threads here about stove lighting, the big solution seemed to be 'cowboy charcoal'. Not the brickets, but charcoal'led wood chunks. Check a local feed and grain store or some place like that for cowboy coal.
I also "discovered" here the idea of a little 'dam' to keep the cowbow coal/rice coal from sliding off the fire grate too soon. Having played with some sheetmetal for ductwork, I simply cut a piece about 3/4" high and 8" long (6",7",8", whatever works) so that I could bend it into a "U" shape and have it be 'springy' against the sides of the grate, just below the air holes. I figured I could fish it out of the ash pan either once the fire was going, or when I dumped it...or make a couple of them for future use and toss 'em with the ashes. In short, anything that will make a dam will work, but it has to be able to be pushed off the gate by the stoker mechanism (or you can reach in with a long rod once the coal fire is going). Alternatively, make or buy some carpenters shim-stock and cut wide enough to barely wedge between the sides of the grate, just enough 'wedge' action to stop everything from sliding down too soon.
Take a couple of chunks of cowboy coal and hit it with a hammer so most of the pieces are perhaps 1-1.5" at their longest measurement. I've used bigger chunks, but my luck has been better with smaller chunks. Put the pieces on the grate, and drop a handful of rice coal on top.
Blowtorch time. Using the cheapo (blue can) blow torch takes forever to light the cowboy coal and the charcoal often didn't stay lit. So I bought a yellow-can blow torch (supposedly hotter) and it lights the charcoal faster. Get a couple of areas of charcoal glowing pretty good...small flame showing is even better. Close the door, turn on the combustion fan, and let it rip. You should see lots of sparks flying due to the combustion fan and cowboy coal dust. I've gone back in at this point with a little more torch action if the cowboy charcoal doesn't seem to be getting hotter. Note, you will get a couple of sparks on your arm/shirt sleeve, etc. Once I see the cowboy charcoal going OK, (about 1/2 to 3/4 of the width of the grate is burning at this point), drop in another handful of rice coal on the fire and close the door. Once you are quite sure the real coal is burning...small bluish flame perhaps 1" high or so, you've got it made.
Let it burn for a couple of minutes while more coal gets burning... By now, the cowboy coal should be mostly burned up. Turn on the stoker to about 2 or 3 and away you go! Remember to plug in/turn on the convection blower at this point, too.
One possibility of "failure to fire" that I've run into has been poor draft in my 60 year old brick chimney on the outside of the house. In fact, some of the times I've tried to light up and the down draft is quite strong. The key here is to close both doors on the stove sooner rather than later to essentially force the air/fumes to go up the chimney rather than blowing back into the house. I've also started a fire with a couple of 6" scrap 2x4s in the bottom of the chimney and let it burn for 10 mins or so two warm up the chimney and get an updraft going.
Usually, the cowboy coal method works first try for me these days. But when I fired up the first time this fall, I didn't have success until the 2nd try. :>(