Before the Oslo I used a smaller VC for years. Each year I'd run the brush down the chimney and end up with a small pile of black dust. This picture is of a VC Encore that I did not use long and got rid of. My point being that it is no easy task to look at the creosote build up in my flue as you can tell by the picture. The Oslo weights over 400 lbs. and I'm 62. Do I need to inspect that flue liner more often than once a year? If so, do you have any suggestions for an easy way? I run the surface temperature of that excellent Jotul between 300 and 600 degrees. 2nd season wood. I love that stove.