This is my first posting here so bear with me. I just happened to stumble upon this forum. Anyway, I am a big Godin fan. I have two Godin stoves (Grand Round and Petit Round) and I would not trade them for anything else. They are the absolute easiest coal stoves to light and the simplest to keep going. Even when I was sure that the fire was going out I've been able to revive the little bit of life that was left in those coals. Truly amazing stoves. Friends that come to my house always admire them and are jealous!
A little bit of history about how I came across my stove. I bought this house in the mountains and the stove was already there. I thought to myself, what a bizarre looking wood stove, plus what the heck is that little round movable grate at the bottom for? Searched on the net and the only sites I found a few years ago were all in French. Anyway, I do know just enough French to figure out that it was a coal stove and not a wood stove. So, about this stove, it was literally in brand new condition. I think the previous owners tried to light it once and gave up. I have to admit, the first time I tried it was a miserable failure too and I was seriously thinking about pulling it out and replacing it with a "normal" wood stove but I persisted and tried a few more times. I quickly got the hang of it and now I can have a nice fire going within minutes and coals go in just 10-15 minutes later. No fuss, no muss! Absolutely wonderful stoves! Since then I've bought a second one (Petit) but have not hoked it up yet pending the completion of my addition but I can't wait to fire up that little puppy.
About your problem. You are doing absolutely everything right. Keep on using nut coal. It's the right size coal for that stove. I have the same problem about the coals not falling on the grate. No big deal. At first I used a poker to just give it a light poke from the top and the coals would fall down. I found out that it's not needed. Now I just let them fall down by themselves. They will come down. Just give it time. Once in a long while I still do use my poker, but I find that I very rarely need to use it. Just feed coals, shake the grate, empty the ash bin. Doesn't get any easier than that! Never had any problems with shaker or anything else. These stoves are as simple as they get and put out wonderful heat.
The reason I came across this forum is because I was googling for Godin sites here in the US. Still cannot find any. Blows me away how such a great stove can remain such a secret. Anyway, if anybody knows of any place that sells parts for these stoves I sure would like to know. I don't need any parts at this time (5 years of trouble free operation) but I figure that someday I might need a new mica window or ??? so it's good to know ahead of time before the need arises.