My technique is getting better as I take on the advice from the community from last week. (LN Boggs curved bottom) The iron is newly sharp. My stroke is more confident, and I occasionally draw off a 4 or 5-inch shaving as I move along the concave curve on my cabinet rails.
Still, after every few good shavings I get a buildup in the throat that will not come out with the brush. I try a pencil. Works one time out of five. Then I take out the iron, brush everything off, and start over. See photo. (I hope it comes through; this is my first attempt at including a photo. I guess that has a learning curve, too.)