I use a breech plug brush. I wrap thin cotton around the brush, put solvent on the cotton (old T shirts work good), then push up to the treads and start to turn it clock wise through the threads, then counter clock wise it back out. It will clean the thread and even the back face real good that way.
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"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, a total wreck, screaming Yahoo, with a big smile on your face."
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