How much creosote on BK princess is too much?

[leddyleds]

Howdy all, we’ve been burning our new BK Princess about 3 months now and we sweep our 24’ straight, 6” chimney every month. We burn white spruce and birch that’s been seasoning 6+ months (the birch up to 2yrs seasoned). When I sweep chimney I get maybe 1-2 cups of creosote, however the firebox is just caked in the stuff. I remove as much as I can but a lot of it is behind panels that I can’t remove (see photos). I take a razor to the glass door monthly and usually can get tons off the door too.

Question is how much buildup in the firebox is too much? I assume this is an outcome of using a catalytic converter, but am I doing something wrong to have this much buildup? Wood still to moist? Sorry I don’t have a moisture meter, but wood is stored in a dry shed with good airflow and I do drop and split wood at least 1yr before I’ll start burning it.

Thanks in advance to any advice!

 

[stoveliker]

This is what happens when you burn low all the time.

Burn high for an hour or two every now and then. It'll burn stuff off.

I do have a 1.25" dua brush on a long flexible metal wire that I use to behind the shields.

 

[kennyp2339]

I'll do a hot burn every other week to help bake off the inside of the stove box, it may not get it all at the first go, but if you do a few maintenance hot burn cycles it will clean things up a bit.

 

[Highbeam]

Don’t be surprised if it takes much more than a couple of hours to dry out those deposits so that they flake off. Softwoods burned slowly can really put some thick gooey junk in the firebox.