I'm sure this has been discussed before but the search results for this topic seem to be so many that the actual answer to my question eludes me. I have an extreme q that now has the elbow screen clogged. It's making it very hard to draw and I was wondering what I could do to clean the screen without damaging anything. Anyone have some suggestions? I've read that alcohol should work but since I haven't found any supporting data, I've not tried it yet.