Check bricks and they have to be good as replacements are too expensive.
Those WM expensive and tough to replace corner bricks are only needed for bituminous coal, local coal burns just fine with standard cheapola fire bricks. We are getting colder now and good stoves are going faster opportunities have been lost by wasting time on a stove that will not produce heat for you in time for this winter. Further exercises with crippled stoves are wasting yet more time and energy (sorry franco). My current favorite of good stuff out there is:http://longisland.craigslist.org/for/4120763205.html
A Crane 88 I do believe but it's on LI. A battle tank of a stove and quite rare, ugly as sin but will see as all in our grave. Good stove! It has a top cooker too you could live on the lake with that one all winter with no power. Bring muscle or make sure someone will help you! I think it's half inch steel but I may be wrong. Dcrane will tell us. Luckily for you most of the world is still asleep so there are a few good opportunities out there but now not many.
As I advised you, the Invader 2 is a Swiss watch that needs to be set up perfectly and that is just the way it is. The 88 is a tank that you can hide behind is someone opens up on you with a AK47. Both excellent stoves but different. The 88 will have just about zero maintenance going forward and that is good as I expect you are tired of fiddling around.